US848316A - Type-writing machine. - Google Patents

Description

N0. 848,316. PATBNTED MAR. 26, 1907. J. U. MCLAUGHLIN.

TYPE WRITING MACHINE.

APPLICATION FILED JULY13.1906.

UNITED STATES PATENT onnro JOHN C. MoLAUGHLIN,

on NEW YORK, N. .Y., A'SSIGNOR TO UNDERWOOD TYPEWRITER COMPANY, OF NEW YORK, N. Y., CORPORATION OF NEW JERSEY;

TYPEQ'WRITING MACHINE.

Specification of v Letters Patent.

. ma a March 26, 1907.

Application filed July 13, 1906. Serial No. 32591.

To all whom it may c'oncerrt:

Be it known that 1, JOHN C.'MGLAUG HLI1 T,

- a citizen of the United States, residing in Manhattan borough, city of New York, in the county of New York and State of New York, A

the 'means which release the paper from the bite of the pressure-rolls and platen.

In the Underwood front-strike typewriting machine it iscustomary to provide rolls beneath the platen for feeding the paper forwardly around and up in front of the platen and also to provide rolls to run upon the top of the platen, the latter rolls .being independently adjustable along the platen and also releasable independently of each other. The lower rolls are releasable by means of a special key. For some classes of work it is frequently desired to release all of therolls, which is usually done by first depressing the key to release the bottom rolls and then lifting the top rolls one at a time from the platen.

The object of my invention is to simplify the-operation of the rolls, and to this end I connect the top rolls to said release-key so as to be releasable thereby at the same time provision for releasing the top rolls simultaneously by means of a finger-piece connected thereto, said finger-piece being preferably the same one that is used for connecting the top rolls to the main release-key.

In the accompanying drawings, Figure 1 is a side elevation of one end or the platenframe of an Underwood type-writing ma. chine provided with my improvements, the top rolls being connected to the main releasekey, all the parts being shown in normal positions. Fig. 2 is a View similar to Fig. 1,

but showing the main release-key depressed so as to throw off the bottomrolls togetherwith the top rolls. Fig. 3 shows the top rolls disconnected from the main release-key, but

arm forming part released from the platen by means of another iingerpiece, while the bottom rolls remain in normal positions against the platen. Fig. 4 is a perspective showingthe rolls all pressing against the platen, but with the top rolls disconnected Fig. 5 is a perspective of a rock shaft and of the mechanism for releasing the top rolls.

The cylindrical platen 1 is revolublyv mounted, by means of an axle 2, in a platenframe comprising ends 3, united by an in- 'clinedrear plate or paper-shelf 4. The latter slopes downwardly and forwardly in rear of theplaten and curves up around'the same,

from the main release-key.

at 5, to form aguide for the paper-sheets.

Beneath the platen. are forward and rear rolls 6 7, controlled by arms 89 projecting from a shaft 10. Upon theplaten-frame is mounted the mainrelease-key 11, connected 14 to act upon arms 15, which control said arms 8 9 in suchga manner .that

when the a link 12 to a rock-shaft 13, having cams key-11 is depressed the arms-8 9 are forced away fromnthe'platen to release the rolls 6 7 y of the platen runv rolls Fig. 2. Upon the top 16 17, mounted upon along-a rock-shaft 19,

frames 18, adjustable mounted in the ends 3 of the platen-frame; Each-of the frames 18 I may be turned up and back to throw the rolls 16 17 off the platen-independently of the other frame. as the bottom rolls; but such connection I As so far described, the parts are in common use on said Underwood type-writing machine. Upon the end of the rock-shaft 19 is secured, by means of a screw 20, a forwardlyextending arm 21, so that by lifting said arm the shaft is rocked andboth rolls 16 and 17 are lifted from the platen. Upon said arm I mount a slide 22 having top and bottom clips 23 24 to catch upon the top and bottom edges of said arm 21. The slide is held in position by the head of a screw 25,- threaded into said arm 21 and passing through a slot 26 in the slide, the ends of said slot limiting the shifting movements of the slideupon thearm 21. Extending upwardly from the slide is a finger-piece 27, whereby it may be shifted. Whenthefinger-piece 27 is pulled forward, a notch 28, formed upon the front end of the slide '22, is engaged with an arm 29 ,which projects from a hub 30 of the lever 31, which carries the release-key 11. When together said key 11 is depressed, the arm 29;, 'owing to its engagement with the notch 28, lifts the front end of the slide and forces the same,

-16 and 117 from theiplatenat the same time the rolls 6 and 7 arefjforced down from-the platen, so that all the rolls are simultaneously a released; vAt the" Fig. positionthe cam.-

shaft l3.operates as usual to detainthe arms 8 9 in their release positions-thereby leav ingthe hands of the operator free'to mani u-.

late the paper,.and it will be understood t at owing to the connection, between the -top:- rolls and the main"release-key 11 said-top. rolls are likewise; mechanically detained in release positions.

'.When the 'finger piece. 27

, is pressed back, the'slide' 22 becomes disconnected from the mainrelease-key 11 Figs. 3

and 4, so that the bottom rolls may be released independently of the top rol s, while the latter may, of course, at anytime be released independently of each other in the usual manner by turning the frames 18 independently around the rod' 19.

The-slide 22 is 'detainedin eachof its -shifted positions by'means' of-a leaf-spring 32, which is fastened-by a screw 33 to the end 3 of the platen-frame and bears down in either of two'notches or seats 34 and 35, formed upon the top of the slide. -.'I his spring also serves to press down the arm 21. and cause the rolls ltrand 17 to bear against the platen, and it will be understoodthatthe finger-piece '27 may be pressed-backwardly, as shown at Fig. 3, to rock the shaft 19, "and thereby hit I both rollsl fi and '17. The bottom rolls'6 and v I -7 are pressed against the platen by the usual springs 36. 40

Variations may sccipe of the invention-1 aving thusdescribed'my invention, I claim f 1,

1. In a type-writing machine, the combi nation with a platen, of rolls mounted to press separately upon the platenpa fingerpiece connected to means to release one of said rolls, and means for connecting the other.

I said rolls, and means for connecting said arm to said key, and disconnecting it therefrom 1 at will, to enable said key either to release the rolls together or to release one roll while the other remainsin normal position against the platen. I 4

. 3. In a type-writing machine, the combination with a platen and rolls mounted to I with the arm 21, to rock upwardly,

thusrockingthe 'shaft 19 .and lifting the rolls a position to the latter to the-platen:

be resorted to within the bear separately thereon, of a 'key having means to release one-oi said rolls, the other of 2 said rolls being releasable independently of said key, and a connectin devi ce'movable to connect the ast mentioned roll to said key at will to be'released'thereby,and also -movable to a position to disconnect thehas mentioned roll from said key, to enable be operated while the l'ast-mentioned roll remains in normal position against 4. Ina type-writing machine, the combiv.nation'with a, platen, ofrolls mounted to bear :sep arately against the I platen, a key for releasingyone of 'said rolls, an arm for releasing the ot er of said'rolls, and a sliding device movableupon said arm from a position to connect said arm to said key, to a position to disconnectthe armirom the key.

'5. Ina typefwriting machine, the combination with a platen, of rolls mounted to bear separately against the platen, aikey for releasing one of said-rolls, an arm for releasing the other of said ..roll s, a sliding device upon said arm for connecting said arm to said key,

or disconnecting it therefrom at will, a finger piece upon said. sliding device for shifting the same, and a yielding. detent for retaining said slide in difierent' positions. I

6. In a type-writing machine,. the combi nation with a platen, of rolls mounted to bear separately against the platen, a key'for releasing one of said' rolls, an arm for releasing the other of said rolls, a sliding device upon said arm for connecting said arm to said key, or disconnecting it therefrom at will, and a ielding detent for retaining said slide in diferent positions, said detent being constructed to bear upon said slide in a direction to 'pressthe roll against the platen.

7. In a type-writing machine, the com-bination with a' platen, of rolls mounted tobear separately against the platen, a key for releasing one of said rolls, an arm for releasing the other of said rolls, a sliding device upon said arm for connecting said-arm to said key,

or disconnecting it therefrom at will, a fingerpiece upon'said sliding'devicefor shifting the same, and a yielding detent for retaining said slide in different positions, said detent being when is'connected from thefirst-mentioned release-key. v

' 8. In atyp'e-wr iting machine, the combination with a platen, anda roll pressing constructed to bear upon said slide in a direction to press the roll against the platen; said -fingeriece being'movable to release its roll against the same, of a key for releasing said roll, a rock-shaft, rolls mounted upon the rock-shaft and adjustable therealbng, an arm upon said rock-shaft, a slide upon said arm movable into and out of engagement with said release-key, a spring for retaining said sgde. in difi'ere'nt positions to which it is s ifted, said spring bearingupon said slide in a direction to press said adjustable rolls "shifted, said spring bearing upon said slide in against the platen, and a finger-piece for a direction to press said adjustable rolls shifting said slide. against the platen, and a finger-piece project- 9. In a type-Writing machine, the combii ing from said slide for shifting the same, and nation 'With a platen, and a roll against the same, of a key for releasing said roll, a rock-shaft; rolls mounted upon the rock-shaft and adjustable therealong, an arm upon said rock-shaft, a slide-upon said arm movable into and out of engagement with said release-key, a spring for retaining said slide in difierent positions to which it is] the tension of said spring for lifting said'adjustable rolls from the platen.

JOHN O.v MOLAUGHLIN.

Witnesses: I

KITTIE' FRANKFORT, JO N C. KQPF.

pressing also for rocking said shaft in opposition to

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