US1517474A - Typewriting machine - Google Patents

Description

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O. THIEME TYPEWRIT ING MAG'HI NE Filed Sept. 5, 1922 2 Sheets-Sheet 2 arent Dec, 2, 1.924.

STATES i oTTo THIEME, oF HARTFORD, CONNECTICUT, AssIGNoE.,

To UNDERWooD COMPUTING MACHINE COMPANY,

PORATION 0F NEW YORK.

PATENT `ori-10151.

TYPEWBITING MACHINE.

Application led September 5, 1922. Serial No. 586,074.

useful Improvementsiin Typewriting Machines, of which the following is a specification.

The present invention relates to typewriting machines. More particularly, the invention, as to one feature thereof, relates to vtables used in connection with so-called continuous billing typewritng machines. As to other features thereof, the linvention relates to column-stop bars and column-stops.

In continuous billing typ'ewriting ma-v chines, work-sheets or webs are used in several layers or' plies, each provided with printed forms constituting. one piece of work, which, when completed, may be torn from the continuous web. Carbon-sheets interleaved between the webs or plies are mounted on a carbon-carriage, so as to advance with the web toward the platen while typewriting, and so' as to be drawn back by the carbon-carriage into the succeeding form-section of theweb after the leading form-section has been' typed, and prior to detachment from the web of such leading form-section. Such a carbon-carriage is ordinarily mounted for movement on a. table connected to the platen carriage at the 'rear of the machine. When set. for typewriting, this table commonly interferes with easy ac'- cess to the column-stops and other devices \and parts at the rear of theimachine, which.Lr from time to time require adjustment or other attention. Consequently, resort has lheretofore been had to various means for movin the table tolprovide clearance to the rear o the machine when desired. /An object of the inventionis the provision of means whereby, without actuall detacl1- ing thetable from the machine, an withoutv involving the introduction of guards at the pivots of the table to hold the table on its support, the table -by a simple and easy Y' movement may -betswung von its pivots between its normal or typewriting position and a position inwhich the column-stops and other parts at the'rear of the machine are conveniently accessible. Features of the invention are the provision on the platen carriage of fixed devices o r guideways in which the forward end of the table moves when swung on its support between the positions mentioned; and the provision of durable and simple means for effectively and automatically locking the table in either position,

A furtherA object of the invention is the provision of means for adjusting, setting and holding the column-stop bar or Irack in such position that .the stops, when set thereon at indicated column positions, will be accurately set.

BY MEsNE AssIeNMismas,A 0E NEW Yonx, N. Y., a con- Another feature of the invention is a column-stop which may be placed and replaced on the stop-bar with minimum trouble; and which, althou h of cheap and simple conin its interlockment with the stop-bar, to withstand the impacts of the carriage in the 'jumps of the latter from one to another column position.

.70 v struction, is o great strength and rigidity,l

Other features and yadvantages will hereinafter appear.

In the accompanying drawings,

Figure is a view, 1n side elevation, of a typewriting machine and attached carboncarrier table, embodying the several features of the `present invention. t f

Figure 2 is a detail view, in side elevation,

of the connections of the carbon-carrier table to Jthe typewriting machine.

Figure 3 is atop plan view of the carriage of the typewriting machine and connections of the carbon-carrier table thereto.

Figure 4`is a front view, partly broken, showing the right-hand connections of the carbon-carrier table to the carriage of the typewriting machine, and showing the adjustable attachment of the Ystop and scale bar to the carriage.

Figure 5 1s a detail. view, in top plan,

partly broken, of the mechanism shownin 'y Figure 4. v

Figure 6 is a rear view, both rlght and left hand side, of the1 mechanism, the right-hand side of which'is shown at Figure 4.

Figure 7 is a perspective view of one of the stops. y

l Referring to the, drawings, the platen 1t, is-carried by an'axle 1I journaled in arms 12 forming? part of a frame pivoted on a shaft '13, which connects and is 'carried by side plates 14 of' the carriage, .The normal or printing positionof the platen and of the frame pivoted on the shaft 13 is that shown in Figure 1. These parts may be swun up around the shaft 13, to permit fan-fol or manifold webs to be advanced in a wellknown manner, for detachment of the lead-v ing or writtensection thereof and for placement of the succeeding section. The linespace movement of the platen, by means of handwheels 15 and b means of a line-space lever 16, may be e ected, both when the 1platen is in its normal position and when it as been swung up for a gross movement of the web. y

For this purpose, there is a gear 17 attached to each end of -the platen-axle 11, each gear 17 being in mesh with one of two gears` 18 journaled on the shaft l13, and each gear 18 being in mesh with one of two gears 19 fastened on stub shafts 20 journaled in the side plates of .the carriage.

` Each shaft 20 has fastened thereto one of construction found inUnderwood typewritingA machines.

ine-s ace movement of the shaft 20, whether Iby the wheel 15 or by the line-spacing mechanism, causes the gear 19 to turnK the gear 18, and, through the latter, to turn the gear 17 and with it the platen. When the platen is swung up around the shaft 13, the gears 17 remain in mesh with the gears 18, 'and consequently the line-space movement of the platen ma be eected, as when the parts are in the printing position.

T e swinging frame is shown as having a paper-shelf 21 secured to a cross-bar 22 thereon, and as having side plates or arms 23 provided with pins 24 adapted to be engaged by hooks 25 fast to a rock-shaft 26 ]ournaled in side members 27 of the carriage. A spring 28 causes the hooks 25 to be thrust forward to engage the pins 24 on the swin in frame, thereby locking the latter an t eplaten down in normal or printing position. In moving' the laten to normal position, the pins 24 force ack the hooks 25 until the latter arefree to swing over the pins. For releasing thexhooks to ermit the platen to be swung u the leftand hookis shown as extende at 29 to `carry a finger-piece 30 by meansof which the hooks and rockshaft 26 may be swung backward until the hooks are clear of the pins 24.

The carriage is shown as provided with the` usual paper-guide and apron- 31 carried b a crossieee 32, which connects the side plates of t e carria e. The 'carriage has movement in lettereed and return directions on arrod 33 on the main frame 34 of 35 supported on a standard 36 secured to the main frame of the typewriting machine at the rear of the latter. yThe carbon-carrier is indicated at 37 on the table 35. It is unnecessary to describe in detail the construction of the carbon-carrier and the mounting thereof on the table, reference being made to United States Letters Patent to B. P. Fortin, No. 1,237,319, of August 21, 1917, for such description thereof as may be desired. Suffice here to say that the carbon-'carrier or holder of the Fortin patent comprises a plate 38 havin secured thereto clips (not shown), eacho which clips engages and holds the'rear end of a carbonsheet; the several clips being stepped up, one

from another, on steps 39, more convenlently to enter and slide between `the Superposed web plies. l

Since the table 35 is to have movement in letter-feed and return directions with the typewriter carriage, 'it lis provided with rollers 40 carried by bracketsA 41, which ride on a rail 42 fast to the standard 36 at the rear thereof. At its forward end, 'the table v As shown in Figure 2, with reference to th bracket 43, these brackets are secured by. screws 45 to 'the cross-bar 32 of the carriage. The bar 46, which forms the forward cross-reach ofthe table 35, has a stud 47 threaded into each end thereof, and the studs 47 ass through arcuate slots 48 in upward y-projectin arms 49, one oneach of the brackets 43 an 44. The normal position of the table 35 is the full line, Figure 1, position thereof, in which osition the studs 47 are at the lower ends o the slots 48. For locking the itable in this position, there 'is a sleeve 50 mov able longitudinally on each of the studs 47 into and out of a circular enlargement 51 of each of the slots 48 at the lower ends thereof.

The table 35 is pivotally mounted to swing beyond the arms 49 of thebrackets 43 and 44 to provide chambers which receive the heads 52 of thestuds 47 and which hold coil springs 53 bearing at one end against the heads 52 of the studs, and at the other end each against a shoulder 54 on the sleeve. The vsprings 53 cause the sleeves to press against the arms 49 and to enter the recesses at the ends of the slots therein when in registration ,with such recesses. Consequently, when the table 35 is swung from dotted line,A Figure 1, vposition to full line, Figure 1, position, it is automaticall locked in the latter position. When the ta le is to be moved to the dotted line, Figure 1, positionfor access to the stops or other mechanism at the rear ofthe typewriting machine, the sleeves 50 are seized Aby their knurled heads 55 and thrown laterally outward against the action of the springs 53; whereupon the table may be swung up. n

For locking the table in its dotted line, Figure 1, position, one or both of the slots 48 of the arms 49may have at the upper end a circular enlargement 56, similar to the enlargement 51 at the lower end thereof, to receive the corresponding sleeve 50; which latter, under the action of its spring 53, will enter such enlargement 56, and thereby hold the table against unintended downward movement by gravity or otherwise. It will be noted that 'the mounting of the table (on its pivot-rod or rail 42 is such that it may swing freely thereon, and will remain connected thereto without other guards or holding devices than its connections to the brackets 43 and 44.

Nuts '57 on the studs 47, between the ends Aof the bar 46 and the bracket arm 49, -may 40 be turned up against the bar 46 to serve as lock-nuts for the studs. On loosening the lock-nuts 57, the studs may be turned to adjust the tension of the springs 53.

The brackets 43 and 44, which serve as 45 connections for the table 35, also serve to hold the column-stop bar. This bar is in the form of a rack 58, the teeth of which are on the under side thereof. The upper face 59 ofthe bar is graduated atV letter-space distances, numbered to correspond to the graduations and numbering on the usual letterspace scale 60 on the front cross-piece ofthe main frame of the machine. For accurate positioning of the rack teeth and scale ofthe stop-harto bring the scale 59 into exact accord with the scale 60, in assembling the machine, and occasionally for readjustment, it is desirable that the bar 58 be adjustable lengthwise of the platen. Such adjustment 60 is provided for as follows. The horizontal arms 61 of the brackets 43` and 44 have blobks 62 secured to the upper faces thereof by pins 63. The under side of the stop-bar 58 is cutl away, as at 62a, beyond the rack to 65 receive the blocks 62. These blocks are up in the operation of slotted at 64 lengthwise of the bar 58. Below the blocks 62, the horizontal arms 61 of the brackets 43 and 44 have holes 65 therethrough to receive heads 66 of screws 67 which pass through the slots 64 in the blocks 62 and through the bar 58, and which are held in place by nuts 69 on the top of the stop-bar 58. rllhe heads 66 of thel screws 67 bear against the underA faces of the blocks 62, and when the nuts 69 are tightened the bar is held against movement. The holes 65 in the arms 61 of the brackets are of such size that when the nuts 69 are loosened the screws 67 ma r have movement with the bar lengthwise o `the slots 64 in the^blocks 62. This movement is effected and controlled by a turn-screw 70, which is threaded into the righthand en lof the stop-bar, and which has a head 71 adapted to bear against a finger or ol'set 2 on a third arm 73 of the bracket 43. They head of the screw 70 has holes 74 therein to receive a pin for turning the screw. When the head of the screw is bearing upon the offset 72, movement of the screw in one direction will eiect a. delicately' controlled movement of the bar' to the left; provided the. screws 67 have been loosened. Turning the screw 70 in the other direction, while pressing the bar to the right, results in a delicately controlled movement of the bar in that direction.

By placing one of the column-stops on the bar 58, throwing the carriage to the same, and reading the position of the carriagefrom the scale 60 on ythe main frame of the machine, the accuracy of setting of the bar 58 may be determined. When accurately set, the bar is locked by the screws 67 withthe head 71 of the screws 70 against the offset 72 of the bracket-43. If the screws '67 become loosened and the bar 58 accidentally disturbed, readjustment of the samein the manner effected.

One of the column-stops is shown in Figure 7. .This stop is-shown as a block just indicated may be readily 75 grooved or channeled to present a v plurality of teeth 76, three such teeth being shown, and each tooth being adapted to enter and fit between .two adjacent teeth of the rack58. A. sheet-metal finger 77 has ears4 `78, by means of which it is pivoted at 79 to the block 75. A coil s ring. 80,'-seated in a pocket in the block 175 bears upward against the rear end of the finger 77 to force down the frontend ofthat finger. The stop Vis forced onto the stop-bar from the rear of the latter; the teeth 76 of the stop engaging the teeth of the rack, and the finger 7 7 swinging up against thexaction ofthe spring`80, to

pass over the top of the stop-bar.

In order'that the linger 77 may be cammed the forwardfend'of the linger is inclined u ward and forward, as at 81, and preferab v placing the stop, Y

the forward end of the teeth 76 are tapered down, as at 82. The inclined lip 81 at the forward end of the finger 77 forms part of a V-shaped detent 83, which snaos over the forward edge of the stop-bar to hold the stop to the latter after the stop has been thrust into home position. Another detent 84 of the finger 77 serves as a tooth or bearing for the latter on the top of the bar, and as a stop to determine the throw ofthe finger under the action of the spring 80. In order that the stop may find its position in-the rack without trouble to the operator, the upper edges of the inclined portion 82 of the teeth 7 6 are preferably tapered off, as indicated at 85. lTo prevent overthrow of the finger 77 and possible displacement of the spring when the stopr` is not in use, there is a tooth 86 formed on one of the ears 78 of .he'finger 77 for engagement with a pin 87 on one side of the block 75.

For co-operation with the denominational-stops, the block is provided with an elongated tooth or lip 88 which depends from the lower face .thereof into the field of action of the denominational-stops. After the tooth 88 has been stepped beyond the denominational-stop, lthe latter may be lifted up behind the tooth 88, land funder the block 75, preliminary to a jnmp of the carriage to the next column-stop. The tooth 88 is tapered at `its edge, so that the denominational-stop may not be blocked thereby on being lifted. The denominational-stop mechanism may be that found on the standard Underwood typewriting machine, and so is not here shown 'or described.

'Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others. Having thus described my invention, I claim: 1. The combination with a typewriting machine having a platen, of a table at the rear of the machine over which a continuous work-sheet may be fed to the platen, a standard on which the table is pivotally mounted to permit the forward end thereof to be swung up and down, and a guideway on the machine in which the forward end of the table is held when the table is swung on its pivot.

2.r The combination with a typewriting machine hawing a platen, lofi, a table at the rear of the machine over which a continuous work-sheet may be fed to the platen, a standard on which the table is pivotally mounted to permit the Vforward end thereof to be swung up and down, a finger on the forward end of the table, and a bracket on the machine having an arcuate guideway thereon in engagement with a finger on the table to hold the table to the machine when the table is swung on its pivot.

3. The combination with a typewriting machine having a platen, of a table at the rear of the machine over which a continuous work-sheet may be fed to the platen,

forward end of the table, a bracket on the machine having an arcuate slot there in for the stud, and a sleeve or collar on the stud slidable longitudinally thereof and adapted to enter an enlargement at the end of the slot to lock the table in normal position.

4. The combination with a typewriting machine having a platen, of a-table at the rear of the machine ovfer which a. continuous work-sheet may be fed to the platen, a standard on which the' table is pivot-ally mounted to permit the forward end thereof to be swung up and down, a stud -on the forward end of the table, a bracket on the machine having an arcuate slot therein for the stud, and a sleeve'or collar on the stud slidable longitudinally thereof and adapted to enter enlargements, one at each end of the slot, to lock the `table in its normal position or in a position to which it may be thrown for access to parts of the rear of the machine.

5. The combination with a typewriting machine having a platen, of a table at the rear of the machine over owhich-a cont-inuous work-sheet may be fed to the platen, a standard on which the table is: povotally mounted to permit the forward end thereof to be swung u and down, a stud on the forward' end of t e table, a bracket on the machine having an arcuate slotv therein for the stud, a sleeve or collar on the -stud slidable longitudinally thereof and adapt'- ed to enter an enlargement at the end of the slot to lock the table in normal position, and a spring for effecting and maintaining a table-locking position of the sleeve or collar.

6. The combination with a ty ewriting machine having a platen, of a ta le at the rear of the machine over which a continuous work-sheet may be fed to the platen,

a standard on which the table is pivotally mounted to permit the forward end thereof to be swung up and down, a stud on the forward end of the table, a bracket on the machine having an arcuate slot therein for the stud, a sleeve or collar on the stud slidable longitudinally thereof and ada ted work-sheet may be fed to the platen, a

, stan-dard on which the table is pivotally slidable longitudinally thereof and adapted to enter an enlargement at the end of the slot to lock the table in normal position, and a coil spring held between the head of the stud and a shoulder on the sleeve for effecting and maintaining a table-lookin position of the sleeve or collar, said stu being adjustable to vary the tension of the spring.

8. The combination with a typewriting machine having a rotary platen and a carriage for effecting letter-feed and return movements of the platen, of a table at the rear of the machine over which continuous work-sheets may be fed to the platen, a standard having a'rail on which tle table is movable with the carriage and on which the table is pivotally mounted to be swung up and down, studs on the forward end of the table, and brackets on the 'carriage having 'deways in which the studs are set to hold the table to the carriage and to permit movement of the table on its pivot.

9. The combination with a typewriting machine having a rotary platen and a carriage for effecting letter-feed and return movements of the platen, of a table at the rear of themachine over which continuous worksheets may be fed to the platen, a standard having a rail on which the table is movable with the carriage and on which the table is pivotally mounted to be swung up and down, studs on the forward end of the table, brackets on the carriage having guideways in which the studs are set to hold the table to the carriage and to permit movement of the table on its pivot, and means for locking the table to the brackets in the normal position of the table.

10. The combination with a typewriting machineiaving a rotary platen and a, carriage for eecting letter-feed and return movements of the platen, of a table at the rear of the machine over which continuous work-sheets may be fedJ to the platen, a standard having a rail on which the table is movable with the carriage and on which `lthe table is pivotally mounted to be s up and down, vstuds on the forward en of the table, brackets on the carriage having guideways in which the studs are set to hold the table to the carriage and to permit movement of the table on its pivot, and means for locking the table to the brackets in the normal position of the table, and for. locking the table to the brackets in the positionI to which thetable has been swung on its pivot for access to' parts of the rear of the machine. v

11. The combination with a typewriting machinehaving a rotar)T platen and a carriage for effecting letter-feed and return movements of the platen, of a table at the rear of the machine over which continuous work-sheets may be fed to the platen, a standard'having a rail on whichthe tabl(` is movable with the carriage and on which the table is pivotally mounted to be swung .up 'and down, studs on the forward end of the table, and brackets on the carriagejhaving upright arms with arcuate slots therein to receive the studs for holding the table to the carriage while permitting. the same to be swung on its pivot. i v

12. The combination with a typewriting machine having-a 'rotary platen and a car,- riagev for effecting letter-feed and return movements 0f the platen, of a column-stop bar on the rear of the machine, columnstops on the stop-bar, a table at the rear of the machine over which continuous workl ,to permit movement of the table on'its pivot between its normal or printing position and the position, thereof tpermitting access to the stops.

13. The combination with a typewriting -machine having a platen, of a table at the rear of themachine over which a continuous work-sheet may be fed to the platen, a standard on which the table is pivotally mounted to permit the forward end thereof to be swung up and down, and means on the machine for holding the table thereto whenithe table is swung on its pivot. 14. The combination with va typewriting machine having a rotary platen and a carriage for effecting letter-feed and return movements of the platen, of a table at the rear of the machine over which continuous work-sheets may be fed to the platen, a standard having a rail on which the table is movable with the carriage and on which the table is pivotally mounted to be swung up and down, and means on the platen carriage for holding the table on 'the rail when it is swungon the latter as a pivot.

OTTQ THEME.

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