US939206A - Roller. - Google Patents

Description

A. E. BLIGHT.

ROLLER.

APPLIGATION FILED MAY 6,1909.

Patented Nov. 9, 1909.

i i ill hubd hwlrt L IIIIIII ventar':

umrun sTATES I ANDREW E. BLIGHT, 's TOTTENVILLE, NEW Yomi;

serum.

Specification be Iietiersltent.

Patented ov. 9 mos.

Appliction filed Kay 6,. 1809. Serial No. 484,258.

To all whom it may concern;

Be it; known (hut 1,.ANDREW El BLIGH'E,

e citiseirof the United Statesfresiding as Totteuville, Staten ISlilHtL- State; of New York, have invented ceiztain new and useful Improvements in Rollers, ofwhich the following is s specification.

My invention relates to typewriters and has for its object to provide a means whereby the elasticity and the thickness of the roller commonly used on typewritiug Ina rately by typewrzt-mg machines costs using; mem were j chines may be varied.

in the use of the rollers of t'ypewriting machines commonly known in the are it has been found that a typewriting machine will operate best when using a certain number of sheets of paper or using paper of a certainthickuess, and, furthermore, it has been found that the rollers commonly used in the art are sometimes made too hard or become too hard by reason of age which often causes the typehammers to crack and break oil. Furthermore the rollers lose their elasticity and become hard and smooth so that the paper cannot be moved as readily and accuthe turning of the rollers us when first: placed on the market.

invention provides a means for iug the elas icity or, eushioniug t roller sue time 27; be desis thrkriess and number of sheets or paper that it is desired to operate upoiu The invention eousiss other features:

1% the ferred; the demr fiorr Referring to the drawings Figure l. illustrates pers eetive View of the iuvention and Fig: 2 illustrates e horizontel sectional view. V

Eeierriug i, l is as heavy tube hasing 5; rubber eushrouing surifeee 2. Fl'ugs 3 and s are loceted irrthe ends of the tube 1 tightly seal the tube sous to prevent the escape of any sir that may be contained in the tube or roller. Heads 5 and 6 are etteohed to the plugs 3 and 4 by means of screws 7 and 18. .The heads 5 and 6 have hollow bearings 8 and 9 which are used in mounting the roller in a typewriting mechine. rod 10 extends through the plugs ure sroliesmzv vsrrecsuee'orehn" 6a the end'lifiheads and the bearings and firmly secures the pasts together. ".lhe rod 1 is p 7 hollow in order to make therolfei: perfieetiy rigid end'g'i'eesuficiene surfabe fer tightly securing the plug and head of one ondiof the roller and the plug and head of the other end. The hollow rodlQextendsthrough therbearings sothet it will. be directly 5 are supported by the hollow tube and the hollow tube is directly supported in the typewriting machine. The head 5 is secured to the hollow rodlby means of the screw 17 and the head 6 is forced on the tube 10 by pressure. A valve casing 11 is located in the heud'5 and is provided with the usual cap 12 and puppet valve 15. This permits the airto be forced into the roller through the opening 16 in the plug 3 and prevents the re turn of the air except as the valvs 15 may be pressed down by pressing on its stem. The head 6 is provided with the usual ratchet wheel for moving the roller step -by-step when it is desired to shift the paper in the machine in the manner Well known in the 1 Rings 13 and 1% are forced on to the of the roller around the plugs 3 and Q 'llhis tightly compresses the ends if i the roller endtl-ie plo s and Band furthe i e the rubber roller frictionally seizes the paper and the surface of the roller being more or i juble by reason ef its: pueurmrrie she Wil i s 7 paper rorrudthe rui-Juer on reurssrr re? w d uiipwi' fifiifififl fifhfi f paper with the pueuuuitie roller. The rigidity of the surface of the roller maybe yaried st will by forcing air into its interior or allowing it, to Furthermore the i diameter" roller may be varied at will in the series manner in order that ditlerent quantities of paper may be inserted in the machine or paper of bhfiereet thickness may be operated upon. This permits the roller to press upon the paper uniformly what-. ever may be. the thickness of the sheets or the number thereof and forms an adjust: ment of the roller to thecheracter of the work thut is desired to be accomplished.

ported'et its ends. The parts of the roller Furthermore the rigidity of the roller surhammer and prevents to a great degree the breaking of the hammer and reduces in a great measure the noise of the machine due to the shar return of the hammer. Forcing air into the roller causes it tobecolne as I hard as it may be desired without changing the mass of the roller and without changing the power of the roller to frictional seizing the paper to a material degree.

The invention may be varied by' those skilled in the art without departing from the spirit thereof. It may be used in connection with a great many devices wherein the thickness or the pliability or the rigidity of the roller is to be adjusted or varied. It

may be in fact embodied in a great many forms of constructions, while yet involving the essence of the invention.

What I claim as new and desire to secure by Letters Patent is as follows rubber cushioning sui face, plugs pneumatically sealing the said platen, heads attached to said plugs, a valve located in one of the said heads, a hollow rod securely set in and attached to the said plugs and the said heads and extended through the said roller, the extended hollow bearings located on the outside of the said rod, the said hollow rod extendin through the said hollow bearin s, rings $01 clenching the said platen to t e said plugs and heads whereby the thickness and pliability of the platen may be varied.

.In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

ANDREW E. BLIGHT.

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