US2131152A - Typewriting machine - Google Patents

Description

Sept.v 27, 1938. B. s'rlcKNl-:Y

.TYPEWRITING' MACHINE 2 sheets-sheet 1 Filed may 14, 1955L Sept. 27, 1938.

B. C. STICKNEY TYPEWRITI'ENG MACHINE Filed May 14, 1935 2 sheets-sheet 2 In Vemw':

ffm/@W Patented Sept. 27, 1938 UNITED STATES PA TENT OFFICE Underwood Elliott Fisher Company, New York,

IN. Y., a corporation of Delaware Application May 14,

10 Claims.

This invention relates to improvements in papercontrolling devices of typewriting machines,- especially to enable manifolding webs or extralength work-sheets, to be fed around the platen without creeping or skewing of the paper.

I'he invention presents a new type of feeder to advance either a single work-sheet or web or a plurality of work-sheets of any length, with accurate alignment.

By means of a shaft having an impaling-pin wheel at each end, rows of regular perforations in the side edges of a work-sheet are, engaged. The platen has holes or notches to mesh with with accuracy.

A control-lever throws the pin-wheels into and out of engagement with the rows of holes in the platen, and a compulsory paper-feeder can be transformed to a smooth friction-type device.

When the machine is to be used in the regular way for writing upon unperforated sheets, the pin-wheels are cast off and pressure-rolls are restored to the lplaten, so that the yfull width of the platen is available This device is made in the form of an attachment, and ts conveniently to the carriage-ends.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a plan of the paper-impaling wheels.

Figure 2 is a perspective showing the invention in effective position.

Figure 3 is a fragmentary section taken throughv the end of the platen.

Figure 4 is a vertical section showing impaling wheels and the feed-rolls in normal positions. This figure shows ribbon-spool 43 and type-guide 44 below the wheels.

Figure 5 shows the Figure 4 parts released.

Figure 6 is a section showing pin-wheels released, and the insertion of extra Work-sheets, which are narrow and unprovided with holes.

Figure 7 is a section showing the impaling wheels cast oi and the parts in position for typing on ordinary work-sheets, with frictional feeding of the sheets.

As seen at Figures -1, 4, 5 and 7, a platen I 0 is journaled at II upon a carriage I2 and provided with the usual line-spacing mechanism IIa and knob I 3. A paper-table I4 guides work-sheets I5.

Upper front pressure-rolls I 6 are loosely carried upon shaft II, which is fixed to bail-arms I8. This bail is hinged at I9 upon seats I9c which are adjustably fastened by screws I 9a upon 55 the platen frame or carriage. Double-acting the pin-wheel teeth and position the work-sheet 1935, serial No. 21,360 (c1. 19t- 133) springs I9b at the ends of the bail-arms I8 hold said pressure-rolls either against the platen or away therefrom, Figures 4 and 5. These rolls may be used when typing upon unperforated sheets. 'Ihey may alsol aid in holding perforated sheets firmly against the platen, especially wide sheets.

Upon the platen-ends are mounted disks III* flush with the platen-surface. Radial holes 20 are evenly spaced around the disks. 'Ihe holes in one disk are preferably in lateral alignment With those in the other. V

The work-sheets I5 have holes I5*i along their sides to align with platen-holes 20. Paper-feeding pinions or wheels 22 have sheet-impaling pinsV or teeth 23, to match and t the holes 20, thereby maintaining the Work-sheets or the webs in perfect alignment, without skewing or disheveling: Each row of pins extends around the entire circumference of the wheel.

Independent rotation of each impaling wheel 22, for adjustment, may be permitted by friction Washers 24. These are mounted on shaft 25 upon which the Wheels turn, and pressi against them. Either wheel may be turned independent- 1y of the other so as to fall into the platen-Wheel holes 20.

'I'he pin-wheels can be moved into and out of operative position by control-lever 26, pivoted at 26a to seat |90. The wheels engage the platen alike, as the shaft 25 forms a rigid member of a bail, being fixed upon bail-arms 21 that are hinged at 28 to the seats I9. Springs 28a hold the pin-wheels against the platen-disks I Il,

'I'he control-lever 26 has a pin 26'J to hold the pin-wheels cast off, Figure 5. Said pin 2Gb fits in a notch 2Ia on bail 2`I,`

control-lever 26 will nd withdraw pin 2Gb from notch 21 and permit bail 25, 2'I to be swung down by vcoil-springs 28a, torestore the pape feed pin-wheels to effective position, Figure 4. It will be seen that pulling the control-lever forward horizontally engages the pin-wheel teeth, work-sheet and platen; and automatically disengages the bottom feed-rollers; and the bail I1 with its auxiliary feed-rollers I6 may be pressed down 'on the platen, thereby co-operating with the pin-wheels' in holding the paper firmly to the platen, especially wide sheets,` which tend to belly out from the platen near t e top edge. When the impaling Wheels are thrown o from the platen, the original work-sheet can'be left impaled (Figure 6) on the pin-wheel teeth; and the feed-rolls I6, 29 being also released, extra l proper mesh with l sheets 42 can be front-inserted behind the sheet which is impaled upon the released pin-wheel. When the pin-wheels are inoperative, they are held frictionally by the spring washers 24 in proper rotative relation with the hole 20 in the platen; so that the pins 23 will readily fall into mesh with the paper and platen, when restored to operative relationship.

Figure 6 shows the impalng wheels 22 cast off, to give room for extra copies-42 to be inserted in front of the platen, without changing the position of the perforated work-sheets I5; the latter still being impaled upon the pins 23 of cast-olf wheels 22, which are retained by the washers 24.

Under the platen the usual feed-rolls 29 may be carried by shaft 30, journaled in rockarms 3|, pivoted upon shaft 32. Springs 33 hold the feed-rolls 29 against the platen. These rolls 29l are seen cast off `in Figure 4, where the sheets are being fed by the impalng couple. A connection between the control-lever 26 and the bottom roll-arm 3l is obtained by a cam-shaft 34, having cams 35 and a crank 36.

'Ihe control-lever at' its end is pivoted in a slotted link 31, which connects the lever to the usual bottom feed-roll-release train. When the impalng wheel is brought into use by the lever, the bottom platen-rolls are cast o.

A release-key 39, pivoted at 40 to the platencarriage, operates a link 4| extending to crank 36 on the cam-shaft 34, so as to cast off the bottom feed-rolls at will.

The link 31 lifts the crank 36 and turns the cams 35 to roll-releasing position.

Link 31 reaches from the crank 36 to a pin 26 onfthe inner end of the control-lever 26, to complete its connection to rolls 29.

When it is desired to use the machine for regular typing upon small 'ordinary work-sheets, the pin-wheels may be cast off by pushing the control-lever 26 backward.. The bottom rolls still run against the platen, Figure '1, but they may be released at will by the key 39 when introducing common work-sheets. A slot 38 in the upper end of the rod 31 is provided for the purpose of giving pivot 26 (located on control-lever 26) the necessary freedom. f

When the pin-wheels are in their released position, the feed-rolls can be thrown on and off independently of the pin-wheel lever, by the feedroll-release lever; by reason of the lost-motion slot, between the feed-roll and pin-wheel mechanisms.

Variations may be resorted to within the scope of the invention, and portions of -the improvel ments may be used without others.

Having thus described my invention, I claim: 1. In a front-strike typewriting machine, a sheet-feeding couple having, in combination, a revoluble platen having at its ends circumferential rows of perforations, and a pair of wheels having impalng pins to nt in marginal holes formed in the work-sheet that is fed between the pin-wheels and the platen, the pins on the wheels meshing with the holes in the platen.

2. In a front-strike typewriting machine, 'a sheet-feeding couple having, in combination, a. revoluble platen having at its ends circumferential rows of perforations, a pair of wheels having impalng pins to t in marginal holesformed in the work-sheet that is fed between the pinwheels and the platen, the pins on the wheels meshing with the holes in the platen, and a shaft extending along the front of the platen and carrying said pin-wheels.

3. In a front-strike typewriting machine, a sheet-feeding couple having, in combination, a revoluble platen having at its ends circumferential rows'of perforations, a pair of wheels having impalng pins to fit in marginal holes formed in the work-sheet that is fed between the pinwheels and the platen, the pins meshing with the holes in the platen, and a control lever having means to carry said pin-wheels away from the platen at will.

4.7In a front-strike typewriting machine, a sheet-feeding couple having, in combination, a revoluble platen having at its ends circumferential rows of perforations, a pair of wheels having impalng pins to iit in marginal holes formed in the work-sheet that is fed between the pinwheels and the platen, the pins on the Wheels meshing with the holes inthe platen, a shaft extending along the front of the platen and carrying said pin-wheels, a contol lever connected to move said shaft and wheels away from the platen at will, the work-sheet being adapted to be retained by the pins when they are released from the platen, and the wheels being relatively rotatable on said shaft, and friction devices to preserve the rotative alignmentof the wheels when they are cast off from the platen.

5. In a front-strike typewriting machine, a sheet-feeding couple having, in combination, a revoluble platen having at its ends circumferential rows of perforations, a pair of wheels to engage the platen at its front side and having impalng pins to fit in marginal holes formed in the work-sheet that is fed between the pin-wheels and the platen, the pins on the wheels meshing with the holes in the platen, a shaft extending on the wheels along the front of the platen and carrying said pin-wheels, a control lever connected to move said shaft and wheels away from the platen at will, releasable feed-rolls to press a work-sheet against the platen, when the pin-wheels are cast off with the 'work-sheet impaled upon the pinwheels, and a spring-pressed releasable feed-roll, settable at will, to press sheets against the platen above the printing line, and prevent the sheets from bellying away from the platen.

6. In a front-strike typewriting machine, a sheet-feeding couple having, in combination, a revoluble platen having at its ends circumferential rows of perforations, a pair of wheels having impalng pins to-fit in marginal holes formed in the work-sheet that is fed between the pinwheels and the4 platen, the ,pins on the wheels meshing with the holes in the platen, and springs to hold the wheels against the paper to press it against the platen.

'1. In a front-strike typewriting machine, a sheet-feeding couple having, in combination, a revoluble platen having at its ends circumferential rows of perforations, a pair of wheels having impalng pins to ilt in marginal holes formed in the work-sheet that is fed between the pinwheels and the platen, the pins on the wheels meshing with the holes in the platen,'a control lever havingmeansto carry said pin-wheels away tial rows of perforations, a pair vof wheels having impalng pinsL to' iit in marginal holes formed in the work-sheet that isfed between the pinwheels and the platen, the pins on the wheels the platen, anda releasable feed-roll to run upon meshing with the holes in the platen, a control the platen above the printing line and controlled lever having means to carry said pin-wheels away by said control lever, to be either released or fr )m the platen at will, a releasable set of feedrestored concomitantly with said set of bottom rolls to run upon the bottom of the' platen, springs feed-rolls. 5 to press said rolls against the platen, and means 10. In a front-strike typewrlting machine, a to enable said control lever to restore said feedsheet-feeding couple having, in combination, a rolls when releasing said pin-wheels from the revoluble platen having at its ends circumferenplaten. tial rows o1' perforations. a pair of wheels having 9. In a front-strike typewriting machine, a impaling pins to fit in marginal holes vformed in 10 sheet-feeding couple having, in combination, a the'work-sheet that is fed between the pin-wheels revoluble platen having at its ends circumferand the platen, the pins on the wheels meshing ential rows of perforations, a pair of wheels havwith the holes in the platen, a control lever having impallng pins to tit in marginal holes formed ing means to carry said pin-wheels away from in the work-sheet that is fed between the pinthe platen at will, a releasable set of feed-rolls 15 wheels and the platen, the pins on the wheels to run upon the bottom of the platen, vsprings to meshing with -the holes in the platen, a control press said rolls against the platen, and means lever having means to carry said pin-wheels to enable said control lever to restore said feedaway from the platen at will, a releasable set of rolls when releasing said pin-wheels from the feed-rolls to run upon' the bottom of the platen. platen, said bottom feed-rollshavi'ng a release- 20 springs to press said rolls against the platen, key whereby to be cast oi or restored independmeans to enable said control lever to restore said ently of said pin-wheels. feed-rolls when releasing said pin-wheels from BURNHAM C. STICKNEY.

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