US538088A

US538088A - Type-writing machine

Info

Publication number: US538088A
Authority: US
Publication date: 1895-04-23
Anticipated expiration: 1912-04-23

Description

(No Mom.)

' T. H. STACKHOUSE.

TYPE WRITING MACHINE.

No. 538,088. PatentedApr. 28, 1895.

UNITED STATES PATENT Grimes.

THOMAS I-l. STACKHOUSE, OF PHILADELPHIA, PENNSYLVANIA.

TYPE-WRITING MACHINE.

SPECIFECATION forming-part of Letters Patent No. 538,088, dated April 23, 1-895. Application tiled June 6, 1894: Seria-l No. 513,625. (No model.)

To @ZZ whom it may concern:

Be it known that I, THOMAS H. STAcKHoUsE,

a citizen of the United States, and a resident of the city and county of Philadelphia, State of Pennsylvania, have invented certain new and useful Improvements in Paper-Feeding Devices for Type-VVriting Machines, of which the following is a specification.

My invention relates to improvements in paper feeding devices for type writing machines, and more particularly to improvements in means for holding the paper tightly against the under central part of the platen, and for carrying and adjusting the endless elastic bands which` are in general use for supporting and holding the ends of the paper to be printed tightly against the platen.

Theobjects of my invention are, rst, to

' furnish an auxiliary roll for holding the paper to be printed up against the central part of the platen; second, to furnish an improved means for carrying the elastic bands between which and the platen the paper to be printed passes and which serve to hold the outer ends of the paper against the platen; third,to furnish means for conveniently adjusting the tension of the elastic bands.

In the accompanying drawings, forming part of this specification and in which similar letters of reference indicate similar parts throughout the several views, Figure l, is a plan of part of the platen', part of the paper feed roll, and the rear paper guide of a type writing machine, and of my invention, the paper feeding bands being moved in near the middle of the platen; Fig. 2, a front elevation of Fig. 1, the paper feeding bands being moved out; Fig. 3, a side elevation of Fig. l; Fig. 4', a side elevation of llink or hanger attached to traveler; Fig. 5, a side elevation of traveler; Fig. 6, a side elevation of pulley carrying arm, andFig. '7, a front elevation of spring and screw carried'by upper part of traveler and which travels in a groove in rod carried by carriage frame.

A is the platen of a'typ'e writing machine; B, the paper feed roll in the rearof the platen; C, Fig. l, the paper guide or chute; D, an auxiliary paper guide roll which is carried by springs E carried by a part of the carriage frame F. f

The springs E hold roll D against the under middle part of the platen and prevent the paper from sagging down at this point.

G, Figs. 1, 2 and 3, is a rod which may be carried in any suitable manner by the carriage frame, which is not shown.

H is a groove upon top of rod G, and which preferably extends from one end of this rod to the other.

I, I are travelers carried by rod G andl which Amay be moved in or out upon this rod.

J, J', are springs secured to travelers I, I by screws K, K and which travel in groove H and hold the travelers in place upon the rod. The travelers `may be more or less tightly secured to the rod by setting the screws K, K in or out and thereby increasing the friction between the springs and the rod. n

The sides of the groove H and the sides of the springs are slightly beveled as shown in Fig. 3 so that the springs may not quite reach to the bottom of the slot. The under side ot' the springs are cut as shown in Fig. 7.

L, L are hangers or links the upper ends of which are secured to the travelers I,Iby the threaded ends of the studs upon which the pulleys M, M are carried, the threaded ends of these studs passing through the travelers and hangers as shown in Fig. 2.

Pivoted upon the studs which carry pulleys M, M are L shaped arms N, N the lower inner ends of which carry pulleys O, O and the outer ends of which carry pulleys P, P.

The lower inner ends of arms N, N are furnished with slots o, through which the studs which carry pulley O, O pass, the ends of these studs being screwed into the lower ends of hangers I, I, the latter acting as nuts to hold the studs and pulleys in place. By loosening the studs they may be moved forward or back- Ward inthe slots ct and with them the pulleys and the tension of the bands R, R may be thus adj usted.

R, R are rubber bands which pass around pulleys M, O, P, M, O, P', and which hold the IOO U are set screws carried by arms N, N and which are adapted, when springs S, S are thrown out of contact with the arms and these arms fall, to strike against the links L, L and prevent the arms falling too low down.

The travelers l, l may be either or both moved in or out, so as to permit the paper feeding bands R, R to grasp the ends of paper of different widths. When the bands are to be moved, the springs S, S are thrown out of contact with the arms N, N and these arms fall and the bands are thrown wholly or partly out of contact with the platen and may then be easily moved in or out.

If the bands are of considerable width it is not necessary to move them away from the platen before shifting them.

Having thus described my invention, I claiml. The combination with the platen of a type writing machine of endless elastic paper feeding bands, means for carrying the same and means for moving said bands toward or away from the ends of said platen.

2. The combination with the platen of a type writing machine of an endless elastic paper feeding band, pulleys upon which said band :is carried, devices for carrying said pulleys, and means for supporting said pulley carrying devices and for permitting them to be moved toward or away from the ends of the platen, substantially as set forth.

3. The combination with the platen of a type writing machine ot' an endless elastic paper feeding band, pulleys upon which said band is carried, devices for carrying said pulleys, means for supporting said pulley carrying devices, so that they may be moved toward or away from the end of the platen, and means for moving said band wholly or partly out of lcontact with said platen preparatory to shifting the position of said band.

Il. The combination with the platen of a type writing machine, of an endless elastic paper feeding band, pulleys upon which said band is carried, devices for carrying said pulleys, means for supporting said pulley carrying devices so that they may be moved toward or away from the end of the platen, means for moving said band Wholly or partly out of contact with said platen preparatory to shifting the position of said band, and means whereby the tension of said band may be increased or decreased.

5. The combination in a type writing machine .of a platen, a rod parallel with said platen, a traveler on said rod, means for securing said traveler to said rod, an arm pivoted to said traveler and passing under said platen, a pulley carried by said traveler, a pulley upon the outer end of said arm, a pulley upon the inner end of said arm and an endless elastic band passing around said pulleys and engaging the lower side of the platen.

6. The combination in a type writing machine of a platen a rod parallel with said platen, a traveler on said rod, means for securing said traveler to said rod, an arm pivoted to said traveler and passing under said platen,a spring one end of which is pivotally attached to said traveler and the other end of which is adapted to engage said arm to hold it in place, a pulley carried by said traveler, a pulleyon the inside end of said arm, a pulley on the outside end of said arm and an endless elastic band passing around said pulleys.

7. The combination in a type writing machine of a platen, a rod parallel with said platen, a groove upon said rod, a traveler adapted to slide upon said rod, a spring carried by said traveler and entering said groove on said rod, a screw for securing said spring to said traveler, an arm pivoted to said traveler and passing under said platen, a pulley carried by said traveler, a pulley upon the outer end of said arm, a pulley upon the inner end of said arm, a slot upon the inner ond of said arm through which the stud upon which the inner pulley is carried passes, a link or hanger the upper end of which is pivoted upon the stud which carries pulley on traveler and into which the stud which carries inner pulley on arm passes, and an endless elastic band passing around said pulleys and adapted to hold the paper against said platen.

8. The combination in a type writing machine of a platen, a rod parallel with said platen, a groove upon said rod, a traveler adapted to slide upon said rod, a spring carried by said traveler and adapted to enter said groove upon said rod, means for adjustably securing said spring to said traveler, an arm pivoted to said traveler and passing under said platen, a pulley carried by said traveler, a pulley upon the outer end of said arm, a link secured to said traveler by the stud which secures pulley to said traveler and which is secured to said arm by the stud which carries inner pulley on said arm, a spring one end of which is pivotally attached to said traveler and the other of which is adapted to bear against and hold said arm in a horizontal position, a stop carried by said arm adapted to engage said traveler to limit the downward movement of said arm when the springis moved away from it, and an endless elastic band passing around said pulleys and adapted to hold the paper against said platen.

THOMAS H. STACKHOUSE.

Witnesses STnvnNsoN H. WALSH, CHAs. A. RUTTER.

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