US1362268A - Off-bearing machine - Google Patents

Description

-P. F. ROGAN.

OFF-BEARING MACHINE.

APPLICATION FILED MAY 22, 1919.

Patented Dec. 14, 1920.

6 SHEETS-SHEET I.

lfiyoyamamwm ivi Wzm attoznwo P. F. HOGAN.

OFF-BEARING MACHINE. APPLICATION nuao MAY 22, m9.

1,362,268, Patented Dec. 14, 1920.

6 SHEETS-SHEET 2. I

' Qvwentoz attoznu a Patented Dec. 14, 1920.

6 SHEETS-SHEET 3.

P. F; ROGAN.

OFF-BEARING MACHINE.

APPLICATION FILED MAY 22, I919.

Patented Dec. 14, 1920.

6 SHEETS-SHEET 4.

P-. F. ROGAN.

OFF-BEARING MACHINE.

APPLICATION FILED MAY 22, I919.

Patented Dec. 14, 1920.

6 SHEETS-SHEEI 6.

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UNlTEfi STATES PATENT OFFICE.

OFF-BEARING MACHINE.

Application filed May 22,

T 0 all whom it may concern.

Be it known that I, PATRICK F. HOGAN, a citizen of the United States, residin at St. Marys, in the county of Elk and tate of ennsylvania, have invented a new and useful Off-l3earing Machine, of which the follOWll'lg' is a specification.

This invention relates to off bearing machines, that is to say, machines adapted for use in connection with the manufacture of hollow tile building blocks or bricks, the object of the invention, generally stated, being to provide a machine of this character which is entirely automatic in its action and "by means of which the blocks are picked up as they come through the usual cutting machine and transferred to the deck of a drying car, whereby a tremendous saving of time ,and labor is effected. 20

A further object of the invention is to provide, in a machine of the character set forth, a combination of rotatable elements the operations of which are timed so as to coact with the cutting machine to receive the blocks as fast as they are delivered therefrom and transfer them to the deck of the drying car.

A further object of the invention is to provide, in combination with such a ma chine, a movable platformon which the decks of the drying car may be successively placed for receiving the blocks from the machine, said platform being adapted to have a step by step movement timed to coact with the machine in such a manner as to present a vacant portion of the deck at the delivery point of. the machine at all times when the machine is ready to deliver a block.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention consists in the novel features of construction and combination of parts which will be more fully described hereinafter and particularly pointed out in the claims.

in the drawings accompanying and forn'n ing part of this specification,

Figure 1 is an end elevation of my improved machine;

Fig. 2 is a plan view thereof;

Fig. 3 is a vertical longitudinal section taken on the line 3-3 of Fig. 2;

Fig. 4 is an elevation of the rear side of the pallet-carrying disk;

Fig. 5 is a side view of the traveling belt Specification of Zetters Patent.

Patented Dec. 14, 1920.

1919. Serial No. 298,897.

adapted to carry the deck of the drying car;

Fig. 6 is a sectional view taken on the line 66 of Fig. 1;

Fig. 7 is a broken away sectional view showing the members mounted on the driving shaft;

Fig. 8 is a sectional view, on an enlarged scale, taken on theline 8-8 of Fig. 1;

Fig. 9 is a sectional view taken on the line 9--9 of Fig. 2, looking in the direction of the arrows; and 1 Fig. 10 is a sectional view taken on the line 10-1O of Fig. 3.

The same characters of reference designate the same parts in the different figures of the drawings.

Referring to the drawings, 2 designates generally the foundation or base of the machine, and 3 the supporting framework formed of a plurality of vertical and horizontal members. Mounted in bearings 4, 4 carried by the framework is a main driving shaft 5, provided with a pulley 6 for receiving power from any suitable or convenient source. 911 the shaft 5 is secured a large gear 7 adapted to mesh with a small gear 8 secured to a countershaft 9, said countershaft carrying at one end thereof a gear 10 in mesh with a gear 11 which is loosely mounted on the shaft 5, the proportions of said train of gearing being such that the gear 11 will be rotated four times during one revolution of the shaft 5.

Referring particularly to Fig. 7, the diameter of the shaft 5 is reduced forward of tl e bearing l and on this reduced portion is loosely mounted a sleeve 12, which is screw-threaded at its ends and adapted to receive nuts 13, between which are mounted on the sleeve the gear 11 and the elongated hub i l of an arm 15, (see Fig. 3), herein called the lifting arm, said gear and hub being tightly clamped between the nuts 13, whereby they will rotate together on the shaft 5. The lifting arm 15 carries a longitudinally movable pin 16, (Figs. 3 and 10), which is bent at right angles and projeots through a slot 17 in the arm and is secured to a member 18 mounted for sliding movement in a longitudinal recess 19 formed in the arm and maintained in said recess by means of a cross strap 20 secured to the arm 15. On the inner end of this slidable member rotatably mounted a roller 21 adapted equal number of cams 37 equally spaced around the periphery thereof for apurpose to be hereinafter described.

'Two pairs of arms 38, hereinafter called retarding arms, are loosely mounted on the shaft 5 back of the disk 35, said arms being retained in proper position on the shaft between the forward nut 13 and a washer 40. Each pair f arms is formed of a continuous member extendingdiametrically of the disk, said members crossing each other at the shaft and being halved together in such a manner that they occupy a space on the shaft equal to the thickness of one of the members, the intersecting portions being so formed that one member is capable of circumferential movement independently of the other a distance corresponding to the length of the slots 36, as shown in elevavation in Fig. 4 and in section in Fig. 7.

A plurality of telescoping arms, hereinafter called the carrying arms, are secured to the disk 35, as by means of the stud 45, to operate at the opposite side of the disk from the arms '38, each of these carrying arms consisting of a pair of members 41, 42, one slidable upon the other. For permitting this slidable movement, each of the members 42 is formed with a longitudinal groove or channel at each side thereof to form a guide for the member 41, and said member 41 is provided with a central longitudinal slot 45 through which passes a headed stud 46 that is secured in the member 42, all as shown clearly in Fig. 1, whereby the sliding movement of the member 41 with relation to the member 42 is limited. The member 42 is secured adjacent to its outer end for rocking movement on a headed bolt 43 that extends through a spacing sleeve 47 which passes through the slot 36, said bolt being reduced at its rear end and one of the retarding arms 38 is secured at its outer or free end to this bolt by means of a nut 44.

A means is provided for retaining the slidablemember 41 of the carrying arms in extended position, and in the present instance this means comprises a plate 49 rigidly secured between a pair of lock nuts 50 carried by the bolt 43, (see Fig. 8), and which plate is adapted to be rocked at the proper time to cause a laterally extending lug 32 formed thereon to engage a notch 41 the retarding arm 38, the rod being bent at right angles rearwardly of said retarding arm to form a crank 54 in position to be.

engaged by a spring-pressed latch 60 carried at the end of the retarding arm 38 and having an offset portion 61 adapted to be tripped at the proper time by contact with a releas ing pin 56 adjustably secured in a slot formed at the upper end of an upright member 57 mounted on the framework, (see Fig. Thus it will be seen that the crank 54 is retained against movement for a predetermined period. crank portion 54 is mounted at right angles thereto a roller 55 adapted to cooperate with a member 33 also secured to the framework, immediately after the tripping of the latch, whereby to rock the carrying arm and cause the lug 32 carried by the plate 49 to disengage the arm member 41 so that the latter is permitted to slide backward on the member 42. Immediately forward of the ear 51 the rod 52 is again bent at right angles to itself to form a portion 58 extending approximately parallel with the member 42, and which member carries'a slotted lug 59 .in which the bent end of the rod is adapted to move, (see Fig. 1), whereby the rocking motion of the plate 49 is limited.

fit the free end of each of the members 41 of the carrying arms is pivotally carried a member, herein termed a pallet or bucket 65, approximately L-shaped, (see sectional view Fig. 6), the member 41 being bifurated for the reception of a perforated lug 66 secured to the bottom of the pallet, through which lug and bifurcations a pivot pin passes. The pallet is held in upright position by means of a'toggle lever 67 secured at one end to a rocking arm 68 that is pivoted in the member 41, the opposite end of the toggle being pivotally secured to the horizontal portion of thepallet. The rocking arm 68 extends horizontally from the member 41 and carries at its free end a tripping member 69 adapted to be tripped at the proper time in the rotation of the disk to throw the pallet into upright position, a pair of swinging arms 70 and 71, adjustably pivoted in slots 82 and 83, respectively, formed in upright portions of the framework, (see Fig. 9), being provided for tripping the member 69.

A means is provided for clamping the blocks in the pallet, and in the present instance this means comprises a clamping lever 72, best shown in horizontal position At the end of the" at the right hand side of Fig. 2. A pair of perforated ears 73 are formed on the underside of the pallet at the side opposite to that at which the lever 72 is mounted, and between these ears is pivotally mounted a bell crank lever 74 having one arm thereof connected by a pitman 75 with the lower end of the lever 72, while its opposite arm is connected by a connecting link 76 with one arm of a second bell crank 77 pivoted on the right-angled portion of the pallet, as shown in Fig. 1, the other arm of the bell crank 77 being connected to an operating rod 78 which is mounted for sliding movement in a bracket 79 secured on the back of the rightangled portion of the pallet, said rod being provided with a head 80 adapted to contact with the drying ear deck 30, as shown at the right hand side of Fig. 1, thereby to operate the bell cranks to release the clamping lever 72 from engagement with the block carried by the pallet. In order to prevent the material from sliding oil" the pallet when the latter is tipped at an angle to the horizontal, I provide a retaining member 84 at one side of the pallet and adapted to normally extend diagonally across the angle formed between the vertical and base portions of the pallet in the manner shown in Fig. (3, whereby the bottom of the block is held against slipping. This member 8 1 is pivotally connected adjacent to the front end of the base portion of the pallet by means of a bracket 85 secured to the underside of the pallet, the member 8% at its opposite end having an L-shaped portion 86 extending upwardly along the edge of the right-angled portlon of the pallet and a portion 87 bent at right angles to sald L- shaped portion and lying adjacent to the back of the rightangled portion of the pallet, shown bestat the upper part of Fig. 1, the end of said portion 87 operating in a bracket 88 secured to the back of the pallet and by which bracket swinging movement of the retaining member on its pivot is limited. The retaining member is normally maintained in upwardly swung position by means of a spring-actuated toggle lever 89 to which is connected an operating rod 90 having a head 91 adapted to contact with the drying car deck in the same manner and at the same time as the head 80 hereinbefore described.

Referring now particularly to Fig. 5, on the framework at one side of the disk 35, at the proper height to receive the deck 30 of the drying car on which the blocks are to be delivered, is mounted an endless belt or apron 31, which supported on a plurality of rollers 95 mounted in hearings in the framework. This apron is adapted to have an intermittent or step by step movement, whereby on the delivery of one block thereto the deck 30 will be moved forward a distance equal to the length of such block so as to leave a vacant space for the reception of the next block from the carrying disk. For this purpose the shaft of the roller at one end of the apron projects be yond the supporting framework and has secured thereon a sprocket 96, while the shaft of the roller at the opposite end may be provided with a smooth guide roller 97 having radial flanges for guiding a link memher or chain 98 that is adapted to engage the sprocket 96 and thereby transmitting motion to the apron. Intermittent motion is imparted to the chain by means of a dog 99 pivotally secured to a head 100 having a portion formed at right angles thereto and adapted to slide in a guideway 101 formed in the framework, the head being preferably provided with a bracket 102 adapted to underlie and support the lower part of the chain. The head 100 is pivotally connected to a connecting rod 108, (Fig. 2), the opposite end of which is pivotallyconnected to a crank 104 secured to the end of a countershaft 106 mounted in hearings on the framework of the machine. This shaft receives its motion by means of a bevel gear 106 secured to the end thereof and which is in mesh with a bevel gear 107 secured to a shaft 108, which shaft has secured to its opposite end a gear 109 in mesh with the gear 10 carried by the countershaft 9, whereby motion is imparted from the driving shaft 5, through the gearing 7 8, 10, 109, 107, 106 to the shaft 105, and by means of the crank 10a and connecting rod 103 the head 100 is reciprocated in the guideway 101 whereby the dog 99 will engage one link of the chain and move it forward and be disengaged therefrom on its return movement, thus producing a step by step movement of the traveling apron. The train of gearing described will of course be so proportioned as to cause the apron to move at the proper time and for the proper distance at each step.

At the loading side of the machine, a member 112, (Fig. 2), is secured on the framework in the path of the bell crank lever 74, whereby as thepallet starts forward with its load the lever 72 is clamped against the block carried by the pallet and remains so clamped until it arrives at the delivery side of the machine, when it is released by contact of the head 80 with the deck of the drying car, as shown in Fig. 1. For providing a rest for the pallet and pre venting the same from dropping back when it arrives at the loading side of the machine, a spring member 111, (Figs. 2 and 9), is secured at its lower end to the framework and springs outwardly at its upper end into the path of the pallet and having its upper end bent at right angles to the body portion thereof, whereby when the pallet is passing upwardly the spring will be pressed inward and as. soon as the pallet has passed it will spring outwardly and form a stop to prevent the pallet from dropping back.

Referring now particularly to Fig. 4, a plurality of springs clamps 113, each made of overlappingspring portions secured by screws to the disk, are mounted'at predetermined'points on the back of the disk and adapted to exert pressure onthe retarding arms 38 at certain times during the rotation of the disk. The function of these members will be better understood in connection with the description of the operation of the machine, which follows:

Looking at Fig. 1, the machine is shown with the pallet at the left-hand side in position to receive a block from the cutting ma chine (not shown), while the pallet at the right-hand side is in position to deliver its block to the deck or; the drying car, while the loaded pallet at the upper part of the figure is about half wayover in its travel from the cutting machine to the deck of the drying car. Starting with the pallet shown at the right of the figure, as soon as thepallet has arrived in the position shown, the heads 80 and 91 carried by the rods 78 and 90, respectively, come in contact with the deck 30 and the block is released. The carrying arms of the pallet having been re leased from the member 49 just prior to delivery of the block, the members 41, 42 may now telescope to permit the pallet to clear the deck 30. As soon as the palletis free of" the weight of the block the continued rotation of the disk causes the edge of the pallet to engage the edge of the deck, whereby.

the carrying arm is rocked on the bolt 43 to the position shown in dotted lines. As soon as the pallet has cleared the edge of the deck it swings downward, thereby again swinging the carrying arm on said bolt owing to the weight of the pallet, whereupon the telescoping member 41 slides outwardly until checked by the stud 46-. When in this position the catch 32 again drops into the notch in the side of the telescoping member 41 so as to retain the same in extended position. The pallet is now entering the third quadrant of its revolution, and as soon as it reaches approximately the center of its travel in this-quadrant the tripping member 69 comes in contact with the shoe 114 carried by the tripping arm 71 and carries said arm along with it until the arm arrives at the upper end of its guide bracket 110, (Fig. 9). By reason of this contact the arm 68 (Fig. 6) carrying the tripping member 69 is gradually swung on its pivot so as to operate the toggle 67 thereby to swing the pallet into a position with relation to the crank arm at right angles'to the position which it occupied prior to such contact. In this position the pallet arrives at the loading point. The

spring member 111, having meantime been pressed inwardly by the pallet, now springs outward and forms a support therefor while receiving its load. A spring-pressed plunger 115, shown best in Fig. 2, now projects in the path of the retarding arm 38 corresponding to the pallet at loading position and retards the same while the disk travels a distance equal to the length of one of its slots 36, leaving the pallet to be picked up and brought forward by the lifting arm 15 as soon as the plunger is released. The plunger carries an arm extending at right angles thereto and passing through a slot in the framework, being provided at the end of the arm with a roller 116 adapted to be operated by the cams 37 carried on the periphery of the disk, thereby to retract the plunger and leave the retarding arm free to be picked up and carried along by the lifting arm. I I

It may be said here that the bolt 43 carrying the retarding and carrying arms travels with the disk from the beginning of the upper right-hand quadrant shown in Fig. 1 until the pallet arrives at loading position, the bolt being maintained during this entire movement at the forward end of the slot 36, and herein lies the function of the spring members 118, shown in Fig. 4 When the arms are traveling through thequadrants at the upper and lower right-hand side of Fig. 1, the bolt 43 is of course supported by the front end wall of the slot, but when the arms enter the quadrant at the lower left-hand side of the figure, since this end wall is forward of the bolt there would be nothing to carry the bolt along with the disk and it would remain at the lower part of the disk until caught by the rear end wall of the slot. It is necessary, however, that the bolt remain at the forward end of the slot until the arms reach the loading position. and for this reason the spring members 1l3 are placed in such position at the rear of the disk as to exert suiiicient friction on the retarding arm 38 to carry it along with the disk until sufficient opposing force is exerted on the retarding arm to overcome such friction. This opposing force is furnished by the spring plunger 115 at the loading position. When the retarding arm comes in contact with this spring plunger the contact between the retarding arm and the spring members 113 is broken and the disk continues its rotation, leaving the arms at the loading position until the disk has traveled a distance almost equal to the length of the slot, whereupon the cam 37 on the periphery of the disk acts on the roller 116 thereby to retract the spring plunger to release the retarding arm, at which time the lifting arm 15 reaches the loading position, its projecting rod 16 (Fig. 3) being at this time in extended position by reason of the action of the cam 23 on the roller 21, (Fig. 10), so that it extends beneath a laterally extending portion 120 (Fig. 8), of the retarding arm and lifts said arm and carries it forward with sufiicient speed to catch up with the disk so that by the time the front end of the slot 36 is entering the upper right hand quadrant the bolt 43 is again at the forward end of the slot and the retarding arm 38 again brought into clamping engagement with the spring members 113. The cams 22 and 23 which operate the projecting rod 16 carried by the lifting arm are so formed and located that the rod is retracted as soon as the lifting arm enters the upper right hand quadrant of Fig. 1, whereby the lifting arm is free of the retarding arm and rotates with sufiicient speed to reach the loading position in time to pick up the next succeeding pallet in the manner just described.

During the passage of the pallet from loading position through the upper lefthand quadrant of Fig. 1, it must again be swung on its pivot so that when it arrives at the beginning of the upper right-hand quadrant it will be located in line with the longitudinal axis of the carrying arms. This swinging motion is accomplished by means of the trippin member 69 carried on the arm 68 (Fig. 6 contacting with the shoe 117 carried by the tripping arm (Fig. 9), which arm moves with the pallet until it reaches the upper end of its guide member or bracket 118, which movement causes the tripping member 69 to exert a rotating action on the arm 68 thereby to throw the pallet back into position in longitudinal axial alinement with the carrying arms.

lVhile I have described in detail the structure herein illustrated, it is to be understood that I do not thereby limit my invention to the precise features of construction shown, as I am aware that many mechanical changes and modifications may be made therein without departing from the spirit and scope of the invention as set forth in the appended claims.

It will be understood. of course, that the various movements of the parts of the machine herein described are so timed with relation to the cutting machine that a pallet is always ready to receive the block as it comes through the cutting machine. It is also to be understood that the drying car deck that is carried on the traveling platform or apron at the delivery end of the machine is lifted by a suitable crane as soon as the deck is ready to be removed from the platform. a continuous stream of decks being successively placed on the platform so as to be always ready to receive the blocks from the machine. It has been deemed unnecessary herein to illustrate any part of the cutting machine or of the crane, since both of these machines are well understood I claim is 1. In a machine of the class described, the combination of a rotatable member, means carried by said member for receiving a block at one side of the machine and delivering it at the opposite side thereof, and means at the delivery side of the machine for receiving the blocks from said machine, said means having a step by step motion.

2. In a machine of the class described, the combination of a continuously rotating disk, carrying means rotatable with said disk and adapted to receive a block at one side of the machine and deliver it at the opposite side thereof, means for checking the rotation of said carrying means at a predetermined time, means for releasing said checking means, and means for causing the continued rotation of said carrying means at increased speed for a predetermined distance.

3. In a machine of the class described, the combination of a continuouslyrotating disk, carrying means rotatable with said disk and adapted to receive a block at one side of the machine and deliver it at the opposite side thereof, means for checking the rotation of said carrying means at the receiving side of the machine, means carried by said disk for releasing said checking means, and means for continuing the rotation of the carrying means at increased speed for a predetermined distance thereby to cause such carrying means to occupy the same position with relation to the disk which it occupied prior to the operation of said checking means. y

4. In a machine of the class described, the combination of a continuously rotating disk, carrying means rotatable with said disk and adapted to receive a block at one side of the machine and deliver it at the opposite side thereof, a spring-pressed plunger normally projecting into the path of said carrying means for checking the rotation thereof at the receiving side of the machine, a cam carried by said disk for re 3 tracting said plunger thereby to permit rotation of the carrying means, and means for continuing the rotation of the carrying means at increased speed for a predetermined distance thereby to cause such carrying means to occupy the same position with relation to the disk which it occupied prior to .the checking thereof. 7

5. In a machine of the class described, the combination of a continuously rotating disk, an arm rotatable with said disk and carrying means for receiving a block at one side of the machine and delivering it at the opposite side thereof, aspring-pressed plunger adapted to normally project into the path of said arm whereby the rotation of the arm is checked at a predetermined time, a cam carried by said disk and adapted to retract said plunger thereby to free said arm for rotation, means adapted to engage the arm and rotate the same at increased speed, as compared with the speed of the disk. I

6. In a machine of the class'described, the combination of a continuously rotating disk, an arm mounted for rotation with said disk and carrying means for receiving a block at one side of the machine and delivering it at the opposite side thereof, means carried by the disk for releasably engaging said arm, means projecting into the path of rotation of said arm and adapted to cause disengagement of the arm from said releasablemeans, means carried by the disk for retracting said disengaging means, and means adapted to engage said arm and rotate the same into engagement with said releasable means.

'7. In a machine of the class described, the combination of a driving shaft, a disk secured thereto for rotation therewith, carrying means rotatable with said disk and .adapted to receive a block at one side of the machine and deliver it at the opposite side thereof, an arm loosely mounted on said shaft andsecured to said carrying means, means adapted to project into the path of said arm thereby to check the rotation of said carrying means .at a predetermined time during the rotation of the disk, means for retracting said checking means, a lifting arm loosely mounted on said shaft and adapted to. engage said first mentioned arm thereby to rotate it independently of the disk, and means for rotating said lifting 'armat an increased speed relatively to the disk.

8. In a machine of the class described, the combination of a driving shaft, a disk secured thereto for rotation therewith, carrying means rotatable with said disk and adapted to receive a block at one side of the machine and deliver it at the opposite side thereof, an arm loosely mounted on said shaft and secured to said carrying means, means. normally projecting into the path of said arm thereby to check the rotation of said carrying means at a predetermined time during the rotation of the disk, means for retracting said checking means, a lifting arm loosely mounted on said shaft. and adapted to engage said first mentioned arm thereby to rotate it independently of the disk, and a train of gearing between said driving shaft and lifting arm'for rotating the latter at an increased speed relatively to the disk.

" 9. In a machine ofthe classdescrihemthe combination of a driving shaft, a disk secured thereto for rotation therewith, an arm loosely mounted on said shaft and carrying means for receiving a block at one side of the machine and delivering it at the opposite side thereof, means carried by the disk for releasably engaging said arm to cause rotation thereof, with the disk, a springpressed plunger normally projecting into the path of said arm for causing disengagement of said releasable means at a predetermined time, a cam carried by said disk for retracting said plunger, a lifting arm loosely mounted on said shaft and adapted to engage said first mentioned arm and rotate it into reengagement with said releasable means, and a train of gearing between said driving shaft and lifting arm for rotating the latter at anincreased speed relatively to the disk.

10. In a machine of the class described, the combination of a driving shaft, adisk secured thereto for rotation therewith, an arm loosely mounted on said shaft and carrying means for receiving a block at one side of the machine and delivering it at the opposite side thereof, means carried by the disk for releasably engaging said arm to cause rotation thereof with the disk, a springpressed plunger normally projecting into the path of said arm for causing disengagement of said releasable means at a predetermined time, a cam carried by said disk for retracting said plunger, a lifting arm loosely mounted on said shaft, a member movable longitudinally of said lifting arm and adapted to be projected into the path of said first mentioned arm thereby to rotate it independently of the disk, cams carried by the framework of the machine and adapted to operate said member into and out of'engage ment with said arm, and means for rotating said lifting arm at an increased speed relatively to the disk.

.11. In a machine of the class described,

the combination of a continuously rotating 7 disk, carrying'means rotatable with said disk for receiving a block at one side of the machine and delivering it at the opposite side thereof, and a system of levers carried by said carrying means and adapted to be operated by contact with members carried by the framework of the machine for clamping the block in said carrying means immediately after the block is received and for releasing said block at the point of delivery of the block.

12. In a machine of the class described, the combination of means for transferring a block from one side of the machine to the opposite side thereof, said means comprising a driving shaft, a disk secured to said shaft and provided with an arcuate slot, a bolt projecting through said, slot, an arm loosely mounted on said shaft at one side of said disk and secured to said bolt, carrying means mounted on said bolt at the opposite side of said disk, said disk having means for releasably engaging said arm thereby to maintain said bolt at the forward end of the slot in the direction of rotation of the disk, means for disengaging said releasable means thereby to permit rotation of the disk Without the arm whereby the rear end of the slot is brought toward the bolt, and means mounted on the shaft and adapted to engage said arm and rotate the same at an increased speed relatively to the speed of the disk whereby the arm is caused to reengage said releasable means.

13. In a machine of the class described, the combination of means for transferring a block from one side of the machine to the opposite side thereof, said means comprising a driving shaft, a disk secured to said shaft and provided with a plurality of arcuate slots, a bolt projecting through each of said slots, an arm loosely mounted on said shaft at one side of said disk and secured to said bolt, carrying means mounted on each of said bolts at the opposite side of said disk, said disk having means for releasably engaging each of said arms thereby to maintain its bolt at the forward end of the slot in the direction of rotation of the disk, means for disengaging said releasable means thereby to permit rotation of the disk without the arm whereby the rear end of the slot is brought toward the bolt, means loosely mounted on the shaft and adapted to engage successive arms and rotate the same at an increased speed relatively to the speed of the disk whereby the arm is caused to reengage said releasable means, and a train of gearing between said disk and arm-engaging means whereby the speed of rotation of said means with relation to the speed of the disk is in the same ratio as the number of arms is to one.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

PATRICK F. ROGAN.

Witnesses JOHN J. RoeAN, HARRY J. BERG.

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