US315849A - Brick-machine - Google Patents

Description

(No ModeL) 3 SheetsSheet 1.

P. L. $IMPSON.

BRICK MACHINE.

Patented Apr. 14, 1885.

(No ModeL) v a Sheets-Sheet 2.

P. L. SIMPSON.

BRIGK MACHINE. No. 315,849. I Patentedkpr. 14, 1885.

'L 70' jig/0 N. PEYERS. mnwmwm. washiu m n c.

(N0 Model) 3 Sheets-Sheet 3. P. L. SIMPSON. BRICK MACHINE.

No. 315,849 Patented Apr. 14, 1885.

@mad $1M UNITED STATES PATENT @rrrbn.

PETER L. SIMPSON, OF MINNEAPOLIS, MINNESOTA.

BRICK-MACHlNE.

SPECIFICATION forming part of Letters Patent No. 315,8fl9, dated April 14:, 1885.

Application filed October 31, 1884. (No model.)

To all whom it may concern.-

Be it known that I, PETER L. SIMPSON, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Brick-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in brick-machines, the object of which is to produce a machine which will be simple and cheap in construction and effective in operation.

My invention therefore consists of two sectors pivoted to the sides of the machine, to which are secured the bars for operating the cross-heads which hold the plungers, said sectors being operated by a double rack raised and lowered by a pitman which connects the double rack with the driving-wheel.

My invention consists, further, in certain details of construction and combinations of parts, which will be fully described hereinafter, and pointed out in the claims.

Referring to the drawings, Figure 1 is a front view of the working parts of my machine, the main frame and base for supporting said parts being omitted. Fig. 2 is a side view of the same. Fig. 3 is a sectional plan view on the line w m, Fig. 1. Fig. 4 is a modification of the base-plate, to which the sectors are pivoted. Fig. 5 is a front view of the cross-head to which the lower plunger is attached, showing a weight for returning the same to the lower or depressed position. Figs. 6 and 7 are side views of devices for returning the lower plunger to its lower position. Fig. 8 is a front view of the devices shown in Figs. 6 and 7. Fig. Sis a sectional view of the cam for returning the lower plunger, as shown in Fig. 1. Fig. 10 is a top or plan view of the feed-box. Fig. 11 is an end view of the feed-box.

A A are guide bars or standards secured in a substantial manner to the base of the machine and braced or strengthened by being secured to the frame of the machine in any suitable way. The bars or standards AA serve as guides for the guide-block of the double rack-bar, for the cross-heads which support the plunger-s, and for the plungers themselves, as will more fully appear.

B B are sectors pivoted to the plate 0 or side of the machine at a, and to which the bars D D and E E of the cross'heads F and Clare pivoted, the sectors being operated by a double rack-bar, H, which is secured to a guide-block, I, traveling up and down between the standards A, said block I being attached to a wrist-pin, K, on the wheel L by the pitman M, and by which means a reciprocating motion is imparted to the sectors B. The bars E E are pivoted to the upper or projecting ends of the sectors above their pivotal point a, while the bars D D are pivoted to the sectors below their pivotal point, and where a side or bed plate, G, is used, as shown in Fig. 1, a segmental slot, '1 is formed therein to permit the pivot-pins which connect the bars D to the sectors to pass up and down.

In the construction of the frame, as shown in Figs. 3 and 4:, no slots are required. The lower ends of the bars D are bifurcated, so as to pass over each side of the sectors, where they are secured by the pins 0, the space between the bifurcated arms extending far enough up to allow the bars E E and the upper ends of the sectors to work between them. The upper ends of the bars D D are secured to the crosshead F, to which the upper plun ger, O, is secured, said plunger being enlarged at the upper end, so as to fitsnugly between the guideways A A. The upper ends of the bars E E are secured to the cross-head G, said bars being provided with slots d, so as to allow the cross-head to be raised up, as will more fully appear.

P is the lower plunger, secured to the crosshead G, said cross-head being provided with a slot, 6, to receive the pivot-pin of the lower plunger, so that when the cam It impinges on the lower end of the lower plunger it will raise said plunger and eject the brie as from the molds. The lower plunger is also guided in ways in the standards A. V

T is the main driving-pulley, which is connected to any suitable source of power by means of the belt U, the shaft of said pulley being provided with a pinion, f, which meshes with and communicates motion to the pinion V on the shaft 9, said shaft being provided with a pinion, lV,which meshes with and communicates motion to the pinion-wheel L, this wheel, as before indicated, being connected to the guide of the double rack H by means of the pitman lVI. j p p A is a pinion secured to the shaft of the pinion-wheel L,which meshes with an idler, B. Said idler meshes with the pinion C on the shaft D,.

As before indicated, the shaft D is provided with a cam, R, which raises thelower plunger to eject the newly-formed brick from the mold. The cam R is provided with side pieces, h h, which give to a portion of the cam a T Shape in cross-section. The lower end of the plunger P is provided with pendants or extensions it, on the lower ends of which are secured friction-rollers k k. The projecting portions h of the cam coming in above the friction-rolh ers, after the brick has been ejected, serves to bring the lower plunger down into thebottom of the mold-cavity.

Z is a friction-wheel secured in the lower end of the plunger, so as to allow of the free passage of the cam. The lower plunger may be returned to its lower position in the moldcavity by means of the weights E, which are .hung on the ends of its pivotal pin, the ends of the pin being extended beyond the sides of the cross-head for that purpose. (See Fig. 5.) In lieu of the devices just described for bringing the plunger P down into the bottom of the mold, I may use the devices shown in Figs. 6, 7, and 8, which are as follows: F is a bracket or pendant secured to the lower end of the plunger P, and is provided with a slot, it, through which the shaft D passes. The pendant is provided with a foot or projection, 12, against which the lower end of the arm G impinges as the shaft D is rotated, said arm being secured to the shaft-D, and is provided with a friction-wheel, 1", which will allow it to roll over the surface of the projection 19.

It will be noticed that when the plunger P has been raised by the camRto eject the brick from the mold that the foot ofthe pendant will also be raised, so that the arm G will strike it as it is rotated by the shaft D, and thus return the plunger to the bottom of the mold. This is perhaps the simplest form, and

' one which I shall adopt in practice.

H is the table on which the clay-box I is moved back and forth to fill the molds of the press with clay.

The clay-box or mold-filler is of the wellknown construction, and is adapted to slide back underneath a clay-hopper, (not shown,) which supplies it with the requisite amount of clay to fill the molds, the extension K of the clay-box or mold-filler serving to shut off the supply of clay during the forward movement of the filler. The box I is moved backward and forward by means of the following devices: shaft D, in the face or periphery of which is cut a cam -groove, 8, in which the frictionwheel 25, secured to the downwardly-projecting arm u, is free to work. The feed-box is moved forward while the friction-roller is L is awhe'el or drum secured to the traveling from the point 1 to 2 in the camgroove, which brings the box I directly over the mold. While the friction-wheel tis traveling from the point 2to the point 3 the claybox is at rest a sufficient length of time to allow the charge of clay to fall into the mold.

The clay-box is drawn back under the clay- M is abelt-tightener, which consists of two,

friction-wheels, b I), mounted in one end of the pivoted weighted lever, between which the belt U passes, so that if the machine is subjected to an extra or undue strain the weight will be lifted, the outer end of the lever raised, and the belt allowed to slip, thus preventing undue strain or breaking of the machine.

In the operation of the machine it will be observed that when the sectors are moved down in the direction of the arrows l 1, Fig. 1, that the rods E E will lift the cross-head G upward, carrying with it the lower plunger. At the same timethe rods D Dare operated to draw down the cross-head F and upper plunger, 0, thus subjecting the clay in the molds S S to an enormous pressure both from above and below simultaneously.

By the upward movement of the rack-bar and the reversal of the direction of the sectors, as indicated by the arrows 2 2, Fig. 1, the upper crosshead, F, and plunger 0, will be raised, and the lower cross-head, G, depressed, so as to rest on the lugs or projections 0 0. It will be further noticed that the IIO pressure exerted in pressing the clay into brick form is direct, so that there is comparatively no strain on the frame of the machine. The frame,which simply acts as guides, can be made of light iron, thus reducing the cost and weight of the machine, and at the sametime adapting it to be readily moved from place to place;

also, the various pinions are geared at the same speed with relation to the cam-wheel L and feed-box, so that it becomes an easy matter to adjust the machine so that all the 4 movements may take place at the proper moment.

In practice I may find it desirable and expedient to invert the operating parts of the machine, or, in other words, to turn the machineupside-'down,with the sectors, rack-bar, and'other mechanism for operating the plungers during the pressing of the brick located in the upper part of the frame of the machine, thus removing these parts away from the wearing and .disintegrating effects of the clay, and such changes in the feed-box and mechanism for operating it, and in the devices for raising the lower plunger to eject the brick from the mold as are necessary to this form of construction, will readily suggest themselves to the skilled mechanic, and such I consider within the scope of my invention.

It is obvious that, instead of two sectors and a double-faced rack-bar, only one sector and a single-faced rack-bar may be used. This 'form of construction may be found specially useful and desirable where small machines for making a single brick at a time are required, and such a construction I consider to be a modification of my invention.

Having thus described my invention,whatI claim, and desire to secure by Letters Patent, 1s

1. In a brick-machine, the sector or sectors pivoted in the sides of the machine and operated by a rack, as described, in' combination with the connectingrods pivoted to the sector or sectors, and the cross-heads carrying the upper and lower plungers, as set forth.

2. In a brick-machine, the sector or sectors pivoted to the sides of the machine, the compression-rods pivoted to the sector or sectors above and below their pivotal points, in combination with the plunger-carrying crossheads, and suitable mechanism for reciprocating the sector or sectors, whereby the lower cross-head is thrust or drawn upward and the upper cross-head drawn or thrust downward simultaneously to compress the clay in the mold, as set forth.

3. In a brick-machine, the rack for operat ing the pivoted sector or sectors, having a guide-block secured thereto, and adapted to work in guides in the upright bars of the ma chine, in combination with a pitman and driving-wheel, whereby the sector or sectors are reciprocated or oscillated, as set forth.

4. In a brick-machine, the cross-head G,

adapted to be raised by the sector or sectors B, and compression-rods E E, said cross-head being provided with a compression-plunger capable of a further movement to eject the brick from the mold, as set forth.

5. The cross-head G, operated as described, provided with a movable compression-plunger, P, in combination with the cam R, and devices, substantially such as specified, for returning the plunger to the bottom of the moldcavity, as set forth.

6. The shaft D, provided with the cam It, and arm G, in combination with the plunger 1?, and pendant F, whereby the plunger is positively thrust upward to eject the brick from the mold and returned to the bottom of the mold-cavity, as set forth.

7. In a brickmachine, the sectors B B and rods E E, in combination with the bifurcated rods D D, adapted to project on each side of the sectors,whereby the sectors and rods E are free to work between the bifurcated ends of the bars, as set forth.

8. Abrick-machine provided with sector or sectors which connect with the upper and lower plungers, said sectors being operated by a rack-bar which is raised and depressed by a pitman connected toacontinuously-rotating shaft or wheel, as set forth.

9. In a brick-machine, a feed-box for filling the brick-molds with clay, connected directly to a cam-groove in the periphery of a drum or cylinder, by means of a projecting arm and friction-wheel, as set forth.

In testimony whereof I affix my signature in the presence of two witnesses.

PETER L. SIMPSON.

Witnesses:

ALEX. MorzULL, WM. L. QUINN.

Images