US1436397A - Paper-feeding mechanism for typewriting machines - Google Patents

Description

L. JENSEN.

PAPER FEEDING MECHANISM FOR TYPEWRITING MACHINES.

APPLICATION FILED JUNE 3.192]- I L43697 Patented Nov. 21, 11922 3 SHEETSSHEET I w haefiaiar LOU|5 JENSEN L. JENSEN.

PAPER FEEDING MECHANISM FOR TYPEWRITING MACHINES.

APPLICATION FILED .IUNE 3,1921.

Patented Nov. 211, 1922 3 SHEETSSHEET Z.

L. JENSEN.

PAPER'FEEDING MECHANISM FOR TYPEWRITING MACHINES.

APPLICATION F-ILED JUNE 3.192|.

Patented Nov. 21, 1922.

3 SHEETSSHEET 3.

J/ZZWZ 0 a L0 15 JENSEN Patented Nov 21, "@220 umrsstareslllthlltl? earner @FFlQi-B LOUIS JENSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO UNITED AUTOGRAEHIC REGISTER (30., OF CHICAGO, ILLINOIS, A CORPORATION OF? ILLINOIS.

- PAPER-FEEDING MECHANISM FOR TYIPEWRITING FMLCHINES.

Application filed June 3, 1921.

To all whom it may concern:

Be it known that I, LOUIS JENSEN, a citizen of the United States, residing at Chicage, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Paper-Feeding Mechanism for Typewritin Machines, of which the following is a fulfi clear,-and exact descri tion.

y invention relates to improvements in typewriting machines and particularly to means for feeding continuous strips of paper therefrom, step by step.-

The object of my invention is to provide mechanism which can be attached to the carrier of either a new or an old typewriting machine to withdraw therefrom step by step sections of a continuous strip of paper, of predetermined lengths which usually have the same forms printed upon them and are provided with series of correspondingly located equi-distant postholes near the tops of or advanced edges of the said printed forms.

This I accomplish by the means hereinafter fully described and as illustrated in the drawings in which corresponding parts are indicated by the same reference numerals. 1

In the drawings:

Figure 1 is a side elevation of the upper portion of thelsupportingframe of a typewriting machine, and an end view of the carrier, with the support for the ribbonwheels broken away, and with my improvements applied thereto. v

Figure 2 isa plan view of approximately one half of the same.

Figure 3 is a'front elevation of the carrier removed from its support, and with my improvements applied thereto.

Figure 4 is a vertical transverse section taken on dotted line 1,. 4, Figure 2, looking in the direction indicated by the arrows.

Referring to the drawings, 5 represents the supporting-frame of my invention which is constructed and designed in any suitable manner to support the carrier so that. it can reciprocate back and forth, and accommodate and support the type-lettersand keys for op erating the same (which are not shown), all contained in any of the well-known type writing machines.

The carrier to which my improvements are attached may be constructed similar to the carriers of any of the type-writing machines now in extensive use, but, for the purpose of describing my invention the carrier of the typewriting machine, which I have selected is, as shown in the drawings, and is provided with end-frames 6, 6, the forward portions of which are connected by a cross-bar 7. This cross-bar has a longitudinal groove or runway in its upper surface, in which bearing-balls, 8, are placed that aresupported by and run in asimilar runway 9, in a suitable track attached to the supporting-frame 5. The bodyof these enduframes extend to the rear of cross-bar 7, a

suitable distance, and have arms 10 project ing from their upper rear portions, and these arms have the ends 11 of rearwardly extending brackets 12 securely fastened thereto that have bearings in their rear ends for the rear ends of the parallel legs 13 of a feeding frame the forward ends of which latter are bent toward each other, as shown in Figure 3, and connected bya transverse member or head 14, substantially as shown in the drawings.

The rear end of one of the legs 13 of said extracting frame, (preferably the right hand leg), is provided with downwardl extending branch 15, and the lower end or this branch is connected to the adjacent leg by a segmental rack 16, the curvature of which is struck from the pivotal center of said leg.

The head 14 consists of a flat transverse strip of metal whose ends are bent rearwardly and attached to the legs 13in any suitable-manner, and is provided with holes or perforations 17, that are separated a distance corresponding to the distance between each pair of postholes, which, as hereinbefore stated, are located near the top of each of the printed forms of the continuous strips of paper.

Near each end head 1- 1 has the ends of leafsprings 18 attached to its rear surface adjacent to its ends and these springs asthey extend toward the center of said head separate slightly therefrom and immediately back of the holes 17 are provided with forwardly projecting pins 19, 19, that extend through said holes.

. The opposed free ends of the springs pro ject beyond these pins and their extremities 20 are grooved longitudinally to convex their forward surfaces.

In operation the extracting-frame is designed to be moved downwards and as it approaches the limit of its downward 'movement pins l9 engage and ride back of the upper edge of the strip or strips of paper and enter the postholes in the advanced edges of the printed forms that are in position to be printed upon. This action of the pins is caused by reason of the extremities 20 of springs 18, engaging the rear transversely corrugated cam surfaces 21, 21, of vertically disposed rectangular plates 22, whose lower ends are securely attached to the rear of a platen 23, which latter extends longitudinally and has its ends attached to the end-frame 6", 6, of the carrier. The cam surfaces 21 are of such proportions that when the pins 19 enter the postholes of the paper they will not, when the feedingframes move upwards, cause the pins to Withdraw entirely from said holes, and, thus, the said paper will be extracted, step by step, as said frame moves upward.

The platen, is preferably, rectangular in cross-section and at its ends has Z-shaped brackets 24,.24, secured thereto, at points about in the same vertical transverse plane as the ends of head 14. A transverse horizontally disposed fiat metal strip or plate. 25, is secured to and supported by said brackets. This plate 25 is so positioned that its flat side is vertical and it has a ,com panionplate 26 arranged parallel in front of it, that is spaced apart therefrom by the interposition of spacing-blocks between the ends thereof to provide a discharge passage through which the paper passes as it is extracted. These plates 25 and 26 are provided with vertically elongated slots 27, that are separated the same distance apart as the holes 17, 17, in head 14 and are located in front of the same when the feeding frame is at the lowest limit of its movement.

The continuous paper strips, a, b, and 0, are threaded through the machine by being passed over the pivotal rock-shaft 28, whose ends are secured in the rear ends of brackets 12, and then extend forward. down under the platen and then up in front of the platen I and through the discharge passage between the plates 25 and 26. The upper edge of the outer plate. 25 of the discharge passage is, say, an inch above the platen, and when the feeding frame is approaching the lower limits of its movement, the free end of sprmgs 18 will be drawn to the rear by the engagement of their extremities and of the canrsurfaces 21 and the forward ends of pins 19 will pass back of the advanced edges of the form next to be printed upon, and will thenwhen said pins are axially in' line with the elongated perforations 27 have reached the apex of the uppercarn surface 21, will ride down the lower mc hned por tion of said cam and permits said pins to move through the perforations 27 and into the postholes of the paper strips.

The ends of the rock-shaft 28 extends through the legs 13 0f the feeding-frame, and a V-shaped-frame 29 that 1s loosely journaled thereon and is retained 1n pos1- tion by a screw 30 tapped longitudinally into the extremity of said shaft. The length of the legs of said V-shaped frame is greater than the radius of the segmental rack 16, and the end of the uppermost of these legs has a pawl 31 pivoted thereto by means of a transverse pin 32.. This pawl is kept in constant engagement with the teeth of said rack by means of a coil contraction spring 33, one end of which latter is secured to the pawl and the other to the leg of the V-shaped frame, substantially as shown in F i ure 1 of the drawings.

he end of the spring 33, is connected to pawl 31 through the medium of a transverse pin 34, and said pawl is connected by means of a rearwardly extending rod 35, to an arm 36, loose on shaft 28 on the inside of substantially as shown in Figure 3 of the drawings, and laps against the parallel surface of a hanger 38. The end of'bar 37 coming in contact with hanger 38 is pro.- vided with a longitudinal slot 39, and it is retained in engagement with said hanger by means of a screw 40 that passes through said slot and is tapped into said hanger so as to permit the longitudinal movement of the bar. The forward edge of the hanger 38 is flanged laterally to provide athumb grasp 41 and so likewise is the forward end of bar 37 to form a purchase for the fingers of the operator.

The outer end of the lower leg of the V- shaped frame 29, has the rear end of a reciprocal rod 43 pivotally connected thereto by means of a crank-pin 44, and this rod extends forward to one of the arms 45, of a T-shaped lever 46, and is pivoted thereto.

This lever is fulcrumed at its angle to the vice consisting of a roller 49 which latter is pivoted to a spring-actuated arm 50 and this arm is pivoted to the portion'of bracket 12, that depends from its'lower edge to a point below Where said bracket is attached to arm 11 of the end-frame 6 just beyond the toothed edge of the rack. Arm 50 has an extension 51 depending below its pivot. The distance the feeding frame can be moved upwards is determmed by the gage 52, consisting of a U-shaped clip which is adjustable longitudinally on, and can be clamped to the segmental member of rack 16 in any position desired and limit the downward movement of the rack and feedin frame.

Vhat I claim as new is:

1. In a typewriting machine, the combination with the carrier, and a platen supported thereby, of; a .vertically reciprocal paper feeder consisting of a U-shaped frame the ends of which are pivotally connected to said carrier at the rear of said platen, and means that intermittently move said feeder during the feeding operation, springs secured to the rear of the transverse bar of said frame, and pins secured to said .springs, and extending through openings'in and projecting forward beyond said bar, that engage postholes in the advanced portion of the paper after it has passed the platen.

2. In -a typewriting machine, the combination with the carrier, and a platen supported thereby, of a vertically reciprocal paper feeder consisting of a U-shaped frame the ends of which are pivotally connected to said carrier at the rear of said platen, and means that intermittently move said feeder during the feeding operation, springs secured to the rear of the transverse bar of said frame, pins secured to said springs, and extending through openings in and projecting forward beyond said bar that engage postholes in the advanced portion of the paper after it has passed the platen and means that engage said springs when the frame is near the lower limits of its movement and draw said pins rearward and then release and permit them to move forward- 3. In a typewriting machine, the combination with the-carrier, and a platen supported thereby, of a vertically reciprocal paper feeder consisting of a U-shaped frame the ends of which are pivotall connected to said carrier at the rear of sai platen, a segmental rack secured to and depending from one of the legs of said frame whose curvature is struck from the axis of the same, and means including a pawl that engages said rack and intermittently moves said frame upwards.

4. In a typewriting machine, the combination with the carrier, and a platen supported thereby, of a vertically reciprocal paper feeder consisting of a U-shaped frame the ends of which are pivotally connected to said carrier at the rear of said platen, a segmental rack secured to and depending from one of the legs of said frame whose curvature is struck from the axis of the same, an oscillatory U-shaped frame the axis of which alines with that of said U-frame, a pawl pivotally connected to the end of one of the arms'of said U-frame that engage said rack and means for oscillating the same.

5. In a typewriting machine, the combination with the carrier, and a platen supported thereby, of a vertically reciprocal paper'feeder consisting of a U-shaped frame the ends of which are pivotally connected to said carrier at the rear of said platen, a segmental rack secured to and depending from one of the legs of said frame whose curvature is struck from the axis of the same, an oscillatory U-shaped frame the axis of which alines with that of said U-frame, a pawl pivotally connected to the end of one of the arms of said U-frame that engages said rack, means for oscillating the same, and a stop device secured to said segment and adapted to engage the upper arm.of said U-shaped frame and limit the upward movement thereof.

'6. In a typewriting machine, the combination with the carrier, and a platen supported thereby, of a vertically reciprocal paper feeder consisting of a U-shaped frame the ends of which are pivotally connected to said carrier at the rear of said platen, a segmental racksecure'd to and depending from one of the legs of said frame whose curvature is struck from the axis of the same, an oscillatory U-frame, the axis of which alines with that'of said U-frame, a pawl pivotally connected to one. of the arms of said U-frame that constantly presses toward and engages said rack, and means for disengaging said pawl when said feeder is moved downwards.

7. In a typewriting machine, the combination with the carrier, and a platen supported thereby, of a verticallyreciprocal paper feeder consisting of a U-shaped frame the ends of which are pivotally connected to said carrier at the rear of said platen, a segmental rack secured to and depending from one of the legs of said frame whose curvature is struck from the axis of the same, an oscillatory U-frame, the axis of which alines with that of said U-frame, a pawl pivotally connected to one of the arms of said U-frame that constantly presses toward and engages said rack, an arm projecting downwards "from the axial support of said U-frame a manually. operated reciprocal bar for moving said arm, and a rod connecting said arm to said pawl.

8. In a typewriting machine, the combination with the carrier, and a platen supported thereby of a vertically reciprocal paper feeder consisting of a U-shaped frame the ends of which are pivotally connected to said carrier at the rear of said platen, a segmental rack secured to and depending from one ofthe legs of said frame whose curvature is struck from the axis of the same, an oscillatory U-frame, the axis of which alines with that of said U-frame, a pawl pivotally connected to one of the arms of said U-frame a spring connecting said pawl to the arm of the U-frame to which it is attached, and means for disengaging said pawl when said feeder is moved downwards.

9. In a typewriting machine, the combination with the carrier, and a platen supported thereby, of a vertically reciprocal paper feeder consisting of a U-shaped frame the ends of which are pivotally connected to said carrier at the rear of said platen, a segmental rack secured to and depending from one of the legs of said frame whose curvature is struck from the axis of the same, an oscillatory U-sha'ped frame, the axis of which alines with that of said U-frame, a pawl pivotally connected to the end of one of the arms of said U-frame that engages said rack, a rod pi'votally secured at one end to the other arm of the U-frame and a manually operated T shaped lever to one of the alining branches of which the other end of said rod is connected.

In witness whereof I have hereunto set my hand this 7th day of May 1921.

Louis JENSEN. Witnesses:

W. R. BARKER, Lnwrs BARKER.

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