US811481A

US811481A - Type-writing machine.

Info

Publication number: US811481A
Application number: US19202504A
Authority: US
Inventors: George W Campbell
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-02-04
Filing date: 1904-02-04
Publication date: 1906-01-30
Anticipated expiration: 1923-01-30

Description

PATENTED JAN. 30, 1906.

GH'W. CAMPBELL. TYPE WRITING MACHINE.

APPLICATION FILED FEBA, 1904.

llNlTED WlhtlES ra'rnn'r oi rron.

GEORGE W. CAMPBELL, OF NEW YORK, N. Y.

TYPE-*WRlTlNG MACHINE.

Specification of Letters Patent.

Application filed ebruary 4, 1904. Serial No. 192,025.

Patented Jan. 30, 1906.

To all whom, it may concern."

' Be it'known that I, GEORGE W. CAivu'nELL, a citizen of the United States, residing at New York, in the county and State of New York,

have invented certain newand useful Imthe manipulation of a single ever or release device and to means for preventing automatic displacement of the upper paper-clamping rolls and guide-plates.

My invention furthermore relates to many improved details of structure fully shown'and described in the accompanying drawings, in

which like reference-numerals refer to like i parts, and in which i v Figure 1 is a rear view of a platen-carriage frame embodying my improvements. Fig. 2 is a transverse section through the platen, platen-frame, and.the feed-rollers in their clamping osition. Fig, 3 is a similar view showing al of the feed-rollers held out of clamping position, the rear feed-rollers being shown in side elevation and held in opposition to their springs, which normally hold them in contact with the platen. Fig. 4 is a top plan view of one of the upper feed-rollers and a portion of the guide-plate and rear bar on the platen-frame. liig. 5 is a longitudinal section through the same, showing said rollers in contact with the platen.

Referring now in detail to the drawings, 1 re resents the platen; 2, the platen-frame, in w 'ch the platenl is mounted on its rod Connecting the two sides of the platen-frame 2 in the rear is arod 4, upon which is pivotally mounted a air of feed-roll brackets 5, having upward y-extending fingers 6 and down wardly-projecting eye-lugs 7,2111 which is 0urnalecl the feed-roll axle or bar 8, carrying the feed rolls 9., Brackets 5 are engage by one end of coils rings 10, coiled about rod 4 and secured at t. eir other ends to an adjustable collar 10", mounted on said rod 1.

Connecting the platen-frame 2 at the front of the platen 1 is-a pivot-bar 11, upon which pivotedflhrongh means of brackets 12, (one y bGiQlfiAShOWD the apron 13, curved to.

conform to the shape of the platen 1 and proj'ecting out from the rear of the platen-frame at the top thereof as a guide'to the paper. Apron 13, surrounding the under side of the platen 1, is provided at the rear of the platen 1 with perforations 14, through which rear feed-rolls 9 project normally to bear against the surface of the platen 1. Brackets 12 are extended upwardly above the bar-11 and sup port at their upper ends the scale-bar and front feed roller or rollers 16, resting normally against the upper surface of the platen 1. At its rear end the apron 13 is free, being sustained only by pressure of theroller 16 upon the surface of the platen 1, said roller being held against the platen by a spring or springs 15, rigidly secured at one end to the bar 11-, their free ends bearing against apron 13 17- designates a'pair of brackets straddlemounted on rod 4 and having fulcrumed therein at their upper ends a papenrelease bar 18, having a bent central bearing por-.

tion and carrying pins or projections 19-, adapted to engage f ngers 6 on the brackets 5. At one end the paper-release bar 18 carries, a hand-lever or handle 20. Release bar 18 also carries on its under side a stop-pin 20, adapted to engage the bar 4 to limit the turning of the said release-bar by the handle 20. 21 is a curved guard-plate connecting the two sides of the pl atendrame 2, serving to guide the paper to the rear of the platenframe and prevent the same recurving on the platen as the same is fed therefrom. 21 is a curved guide-finger adapted to guide the paper down onto plate 21.

Positioned above the platen at the rear of the platen-frame 2 is a pair of upper feed or guide rollers 22, pivotally mounted in jaws 23, pivoted to apin 24, carried. by a springhousing 25, secured to the rear part of the papeeguide plate 26, bent about the rear bar 27 of the platen-frame. Spring-l1ousi1w 25 carries a coil spring 28, one end of which bears against the rear bar 27 of the platenframe, the forward end of the said. spring can rying a plunger or cam pin 29, hearing against the cam-surface 30 on the rear of the jaws 23, for the purposes hereinafter described. Guide-plates 26 are provided with suitable perforations to'allow the rolls 22 tobe held in engagement with the surface of the platen 1. v

In operation the forward pressure of the handle 20 will oscillate the bar 18 until g eiiasi stopped by'the stop-pin 20 forcing the bent bearing portion 18 of the bar 18 against the apron l3, elevating the apron 13, which turns on its pivobrod 1] in opposition to springs 15, and throwing the roller 16 away from the platen 1, as shown clearly in Fig. 3. The feed-rolls 5), as stated before, are held normally against the platen 1 by their springs 10. When the handle 20 is operated, pins 19 on the bar 18, pressing against theupwardlyprojecting fingers 6 on the brackets 5, partially rotate the said brackets 5 on the rods 4 l in opposition to the said springs 10 and carry the rollers 9 away from the platen. The parts are held in this position by the handle or lever 20 being held depressed unt1l the paper is properly adjusted by the operator. The stop-pin 20 is provided to prevent eX- cess movement of the bar 18, which would have the effect of elevating the apron 13 to too great an extent, so that the bottom of the a ron 13 would rest against the surfaceof the p aten and hold the paper against adjust ment. The guide-roll 22 is thrown out of operative position through elevating by hand,

- the same being held a ainst automatic return by friction between t e cam-surface 30 and the pin 29.

In order to prevent lateral displacement of the guide-plate 26 on the rear bar 27 of the platen-frame, the spring 28 is so' arranged thatthe same impinges directly against the said bar, thereby providing sufiicient friction to holdthe said parts against lateral movement on the said bar, and yet allowing the same to be freelymoved by the hand of the operator when it is desired to adjust the same.

I do not desire to be limited to the exact details of structure herein shown and de scribed, inasmuch as the same may be varied without departing from the spirit of my invention.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

1. In a paper-feed device for ty e-writing machines, the combination with t e platen, the platen-frame, the apron pivoted to said frame, the feed-roll carried by said apron, a pivot-bar mounted in said frame, the feedroll brackets pivotally mounted on said bar and having upwardly-projecting fingers, the feed-roll earried'by said brackets, the s ring means connected to said brackets, of t e re-' lease-bar mounted above said brackets and on said brackets.-

2. In a paper-feed device for type-writing machines, the combination with the platen and the platen-frame, of an apronsurrounding the under side of said platen and having a suitable perforation; therein and pivoted at one end to the'said frame, the feed -rollfree end of said apron and for engaging the said bracket to move the feed-rolls awayfrom the surface of the platen.

3. In a paper-feed device for type-writing machines, the combination with the platen and the platen-frame, of an apron pivoted near one end to the platen-frame at one side of the platen surrounding the underside of the platen and projecting upwardly and rearwardly at the other side of the platen, a feed-roll carried by the apron at the end adj acent its pivot and normally resting against the surface of the platen, and means independent of said apron for elevating the rear end thereof to turn the apron on its pivot to carry said feedroll away from the surface of the platen. g

4. In a paper-feed device for type-writing machines the combination with the platen and the platen frame, of an apron surrounding the under side of. the said platen pivoted near one end to the said frame and free at its opposite end, a feed-roll mounted on the end of the apron adjacent its pivot and resting normally against the surface of the platen, and means independent of said apron for elevating the free end thereof to turn the apron on its pivot to carry the feed-roll away from the surface of the-platen.

5. In a paper-feed device for type-writing machines, the combination with the platen and the laten-frame, of an apron plvoted at one si e of the laten surrounding the under side of the aten extendin upwardly and to the rear of the platen-en free at its rear end, a feed-roll mounted on the pivot end of the apron and resting normally against the surface of the platen, means independent of said a ron for elevating the same to carry said fee roll away from the surface of the platen, and a pa er-feed roll normally in engagement with t e platen and diametrically opposite tothe feed-roll mounted on the apron.

6. In a paper-feed device for type-writing machines, the combination with the platen and the platen-frame, of an apron pivotally mounted near one end on said frame, and a paper-feed roll mounted on the end of said apron adjacent its pivot resting normally against the surface of the platen, and means independent of said apron for causing a pivotal movement of the apron to move said feed-roll away from the surface of the platen. 7. In a paper-feed device for type-writing machines, the combination with the-platen and-the platen-frame, of an apron'pi'votall mounted at one end and free at its other en I rearwardly at the other side of the platen and roll to carry-said ro ls away from the surface;

one side of the platen surrounding the tinder side of the platen extending upwardly and free at its rear end, a feed-roll mounted on the pivot end of the apron and held normally against the surface of the platen by the weight of the said apron, and means independent of said apron for elevating the apronto carry the feed-roll away from the surface of the platen.

9. In a paper-feed device for type-writing machines, the combination with the platen and the platen-frame, of an apron having a feed-roll perforation pivoted at one side of the platen surrounding the under side of the platenv extending upwardly and rearwardly at the other side of the platen and free at its rear end, a feed noll mounted atthe pivot end of the apron and held normally against the surface of the platen by the weight of the apron, a spring-pressed feed-roll projecting normally through the perforation .in the apron and engaging the surface of the apron diametrically oppositeto the feed-roll mounted on the apron, and means for elevatin the apron and engagin the spring-pressed eedof the platen.

10. In a writing-'machinethe combination with the platen and the platen-frame, of a guide-plate slidably mounted on said frame,

a shank pivotally mounted on said guide-- plate, a feed-roll mounted on said shank a spring in engagement with said shank and in s idable engagement with said frame to hold the feed-roll in "adjusted position and to hold ment.

11. In a paper-feed device for type-writing machines, the-combination with the platen and the platen-frame, of a guide-plate slidably mounted on said frame, a tubular housing mounted on said guide-plate, a feed-roll having a wedge eshaped shank pivotally mounted on said housing and movable into and out of engagement with the surface of the platen, and a spring mounted in :said housing bearing a ainst said shank and slidably the guide --plate against accidental displaceengaging sai frame to hold the guide-plate against automatic displacement of said frame and to hold the feed-roll inelevated position. 12. In a paper-feed device for type-writing and the platen-frame; of an apron pivotally mounted at one end and free at its other end, a feed-roll mounted on the pivot end of the apron and normally held against the surface of the platen by the weight of said apron, auxiliary means for holding said feed-rollagainst .the' surface of the platen, and means independent of said a ron to elevate the apron'to carry the feed-r0 l away from the surface of the platen.

GEORGE W. CAMPBELL. Witnesses: I

Susan E. CARINE, HARRY A. KNIGHT.

machines, the combination with the platen