US1054343A - Pneumatic tool. - Google Patents

Description

G. A. FAESSLER. PNEUMATIC TOOL. APPLICATION rI'LnD 11110.15, 1911.

1,054,343, Patented Feb. 25, 1913. f "5 Witnes 1 cnaarns A. raessnsn; or serrate, NEW YORK,

assiqn'oa ro JOHN ziu'rrenroaran, or. nurraro, NEW .Yoax.

PNEUMATIC 'DQOL.

flpeolfloatlon of Letters Patent. Patented Feb. 25,1913.

Application and December. 15,.1911. Serial no, eeaove As the general operation ofa pneumatic.- tool is familiar to "those skilltdin the art, I have deemed it unnecessary to illustrate and i. enter into a detailed description of the dis.-' tribution-valve, and the tool-c linder andto- Tom-1 wnom it may concern:

Be it known that I, Cnannns A, FAESSLER, a citizen of the United States, and resident oflflutlalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in -Pneumatio Tools, of which the following is a specification. 1

My invention'relates to pneumatic tools,

and more particularly to the controlling-.

valve and its adjuncts.

The primary object of this invention is the production of a riveting, chi ping, or

other pneumatic tool, in which vi ration is reduced to the minimum, and which is simple in construction, quick in fiction, and

easily controlled. p Other objects are to provide a double closure against the leakage of air around the controlling-valve; toso construct said valve that the air passes through the valvecasing at a right-angle to the direction of movement of said valve; to provide the valve with a conical or tapered portion against which the motive agent acts to aid in openingfthehvalve; to arrange the parts to opposite sides of the valve out,o'f line so thatuthe motive-agent will first ,act to depress the valve betore it can enter the passa' e leading to the tool-cylinder; and to ot orwise improve on pneumatic-tools as will be noted hereinafter-t To these ends the invention consists in the construction, arrangement,;and combination of parts to be hereinafter described and particularly pointed out in the subjoined claims.

In the drawings, Figure 1 is aside elevation of a tool handle embodying my invention Fig. 2 is a" front elevation of the same. Fig. 3 is a longitudinal section, taken on line 33, Fig. 2. Fig. 4 is a longitudinal section, taken on line 4-4, Fig. 1. Fig. :3 is a transverse section taken on line 5-5, Fig. 3.

Referring now to the drawings in detail, corresponding letters of reference refer to corresponding parts in the several figures.

A designates the handle containing the controlling-valve B. The lower portion of the handle is hollow and preferably cylindrical, as at C, to receive the usual distribution-valve, or analogous-device; and it is internally threaded, as at c, to receive a tool cylinder.

its contained parts, particulary since an invention is to be used in connection wit the working parts of any. of'the various forms of pneumatic-tools.v

The handle has ahead-grasp. D whichiisos 1 in the form of a. curved. c lindrical cross- 4 bar located above the ho owv cylindrical portion C and separated from'the-latter by an intervening epacec through which the fingers of the operator may be passed, thus allowing him to conveniently; take hold of said hand-grasp; said cross-bar being connected, at one end to the cylindricaliportion C by a reduced nnder-curved portion d,.and-

at the other endby a substantiall cylindii- 76 cal boss E arranged arallel' wit said cylindrical portion an serving as. a valve-- .casing. The latter has a-cylindrical bore 0 which is closed. at the. bottom and. open at its upper end; said upper'l'enfl being inter- 80 I nally threaded for connect on with the threaded portion f of abushingFLvvIiich is inserted into the valve-chamber and ext nds to within a short distance from-'itsbottom. I

The upper end of said bushing'isenlarged 5 and preferably made hexagonal,-as at G, so that a wrench mayc be applied. for properly and securely. screwing it. into place and for convenientl removing- Ethel same. Said bushing may e'saidrto; f ojrmrllfl part of the valve-chamber, 'andi-if desired may be omitted entirely,.bu.t I'hove fou d, it more practicable to use the' samepa'shn accurate lit between it and itsnontained parts can be obtained. more easily than 95.

would be possible by lacing SilidzPlll'tS directly into the cylin rieal- 038' E: Mord over, the sleeve maybe made of'steel. which is less liable to wear under the action 'of the controlling-valve and by time providin a 1 .0 steel-bushing for the valveohalnbenfl. e

handle can be made f br e suitable metal. a

which may be screwed the ttin of a flexihie-boss leading to the supply oaths-mg! five-agent, and'connecting the ihollow-oylr W'W' inderC with the interior of the-hossE,;

in the bushing P int a passage H through which the motive agent is led to the distnbution-valve usually em-- ployed in tools of this kindvThe bushing F has an inlet port I Lwhich registers with 5 the inlet-opening e in the valve-casing, and an outlet-port J out; of direct line withsaid inlet-pint and in registration with the -passage Thecontrolling valve B is movable ithand is machined to fit closely therein.,. Said valve comprising a body-portion K, a stem is, a conical portion In between said stem and body-portion, and a stud lc at 1 its inner end. Within the bushinQ'ofthevalvechan *er is a sleeve L having ajcentlral bore through. which the stem of the'valve' passes and from the outer end .of 'which said 'ster'ri projects. Said sleevelias'the inner end of its bore flared or beveled to form a valve-seat Z for the'conical portion of the valve. Sleeve L is prefer ably provided with an enlarged head of hexagonal or other convenient shape for ap- .plyinga'wrench; and beneath said head it has a: threaded'portion I which fits into the internally: threaded upper end ofthe bush-k. ing. "Between the bottom of the valvechan'iber "and thebo'dy of the valve, a'coil springM iinterposed which has its upper and surrounding the stud 70 whereby it is centered toassure free action and preventfcrampin g, "Said spring acts to-inaintain the valve in its closed positiomand in. order to'openthesame with a view of ac 36 tuatinpl' thefw'orkingparts ofthetool; said valve'iniist. be opened by 'manual efiortp This is accomplished by means of a lever N .movable within a'groove O in the hand grasp of thejhandle. Said lever is secured 40 within said'g'roove'by means of a pivot-pin n passing thronghit at oneentl and through openingsin the hand-grasp; the lever ex-- tendingin the rear of said pivot-pin, as at n and havi'ng its lowe'redge at this point -15 serving as a stopto limit theupward-movement of its forward free end, in consequence of which the-outward movement of the valv isjalso lirnited,"oivi'ng to the l ver bearing-with its free end against the an "acting endof the stem of said valvetuf-LZ'? 1' 5) v v B {constructing-the valve-operatin lever in t'd-in-annr described, it extends iiangthwise of th flhand-grasp and can most con-' venient he operated by pressure ofthe hand) nsteads-of the thumb'as has heretofore b'e'en' the practice; said action being I more e'onvenient and not so like! to tire ."theoperatoru Moreover, considera le more pressure'ca'n be exerted with tbe'handthan by the use o'f the 'thiimb alone andwith muchless efi'ort; and owing to the inlet and ont-let ports of the valve-chamber'beirig ar- "rziiige'd out oiaccnrate registratiom-depres B5 sion of said operating lever causes the valve :of the body-portion with a tapered or conical portion, and supplying a valve -seat outlet-port, and a valve movable within said chamber, saidvalve and the ports of said chamber being so related that during the .rnovement'of said valve the ii-utlet-port is 1' lct-port,- and a vaive movabie in said chamber to control. the p assageei the motiveport, said. ports being arranged out of line,

to be moved inward against the action of the spring M, resultin in a partial opening" of the inlet port whi e the outlet-port is still closed, thus admitting the motive-agent into the chamber between the conical portion of ti the valve and its seat; the motiveaigent acting instantly against said conical portin to depress the valve and aid the operator in the controlling of the'tool. Owing to the motive-agent being under considerable prosure, the valve act-s quicker and more posh tive than could be done by manual effort alone.

By providing the valve atthe upper end so fully embodied within the scope of my in- I vention may be resorted to; and i, do not wish to be limited to the exact construction hereinshown and described.

I claim, 1. In a pneumatic-tool, the combination of a handle having a o ind ical valve chamber provided witha inngie inlehpor't and an outlet-port, said ports loeingarranged out of line, and a valve reciprocal in said chamber and acting to partially open the inlet-port before opening the outiebport.

2. Ina pneumatic-toohthe combination of a handle avlng acylindncalwalve chamber provided with a single inlet-port and'anr closed while the inlet-port is partially opened.

3. In a pneuniaiioto'ol, the combination of adhan'dle having a valve-chamber providcd with a single inlet port and an outagent therethrough, said-valve and the ports of said chamber being so related that duringthe movement of said valve the inletport is artially opened while the outletport is c ose'd.

4. In a pneumatic-tool, the combination of a-handle having a valve-chamber pro vided with a single inlet-port and anoutletand a valve reciprocal in said chamber and acting to close the ont-letrport tartan: entirely closing the inlet-port.

5,..111 apnenmatiotoohthe combination oi a"hend-grasp. a valve -ehamher having; a.

spring-pressure to open said ports, said ports and the valve being so arranged that one port is entirely opened before the other. 6. In a pneumatic-tool, the combination of a hand-grasp, a valve-chamber having a single inlet-port and an outlet-port, a valve reci rocal in said chamber and spring-control ed to normally close said ports, and means for". anuall'y counteracting the springpressure. to open said ports, said ports and thefvalve being so arranged that one port is eritirely closed before the other.

7. In awpneumatic-tool, the combination of a hand-grasp, a valve-chamber having a single inlet-port and an outlet-porn a valve movable in said chamber and spring-pressed to normally close said p.orts,- and means for manually actuating said valve against the spring-pressure to cause said ports to be opened; said valve being so arranged that when the inlet-port is partially opened, the motive-agent aids in the opening of said valve.

8. In a pneumatic-tool, the combination of a valve-chamber having aninlebport and an outlet-port at diametrically opposite points arranged slightly outof line and a beveled valve-scat, a valve normally closing said ports and havin a stem protrudin" from one end .of'saidc amber and a conica portion, normally seated a ainst said valveseat to prevent leakage o the motive fluid along said stem, and means to manually actuate said valve to cause it to move from "said seat and to open said ports, said inletport being artly uncovered during the movement 0. said valve before the latter acts to uncover the outlet-port.

9.'In .a neumatic-tool, the combination of a cylint rical valve-chamber having an inletport and an outlet-port at diametrically o-pposite points and a beveled valvescat, said ports being arranged so that one is closer to the outer end of said .chamber than the other, a valve having a conical portion and being spring-pressed to close said ports, and to seat said conical portion against said valve-seat, and means to move said valve toward. and from said valve-seat; said inlet-port being artially uncovered during the movement ot said valve from said seat before uncovering the outlet-port and the latter being entirely covered during the movement of ,the valve toward said seat before entirely covering the inlet-port.

10.'In a nc'umatic-tool, the combination of a va'lve ciiamber having an inlet-port and an outlet-port, a spring-pressed valve having a conical portion, a'nd means to depress the valve manually; said conical portion of the Valve being brought into line with the :let and outletort's, a s eeve fitte inlet-port before the outlet-port is opened 'so that the motive-agent enters the valvechamber and is confined the valve.

11. In a pneumatic-tool, the combination of a handle having an integral valve-casing provided with a single inlet-opening and a passage extending from the interior' o'f said casing through the handle, a bushing in Said casing havin an inlet-port in registration to aid in depressing with said in et-opening and an outlet-port in registration with said passage; a spring.- pressed valve reciprocal in said bushing and normally closing said ports, and means whereby said valve may [be manually actuated to open said ports the'ports of said bushing being out of line sothat'during movement ofsaid valve in one directi'ou'lhe inlet-port is b ing opened before the outlet port. v y

12. In a pneumatic-tool, the combination of a handle having an integral valve-casing provided with a single inlet-opening and a passage extending from the interior of said casingthrough the handle, a bushing'in sai l casing hav'in an inlet-port in' reg1stration' with said inlet-mooning and an outlet-pout in registration with saldi passe e, a-sprin pressed valve reciprocalin said jushing an normally closin said arts, and -means whereby said va vc maye' manually actuated' to open said ports; "the portsof said bushing being out of line sothat during movement of said valve in one direction the inlet-port is being opened before the outlet-port and during movement of said valve in its opposite direction the outlet-port is closed be ore the inlebport.

y 13. In a pneumatic-tool, the combination of a handle having an integral valve-casing provided with a single inlet-opening and a passage extending from the interior of said casing through the handle, a bushing in said casing having an inlet-port in r 'stration with said passage, aspring-prcsse valve reciprocal in said bushing and normally closing" said ports, and means whereby said valve may be manuall actuated to open said ports; the ports 0 said-bushing being out of line so that the outlet-portwill he closed before the inlet-port.

14. In a pneumatic-tool, the combination of aval've-chamher havin abushin endinin one end of said bus ing with its inner end acting as a valve-seat, a valve reciprocal insaid bushing and normally seated against said valve-seat and'closing said inletand outlet=ports, and means to manually unseat said valve and also causesaid ports to be opened. I y

15. In a pneumatic-tool, the combination of a valve-casing having an'inlebopening l. ing having an i let port in registrtion with sanl I inlet-Opening, and an utletport in registration .ivith said passage, a sleeve removable in said bushing and-haying its in-' {6 nei vendbeveled, and a spring-pressed valve we normally. closing said 'ports and having a l I .conicalpox tion normally seated against said x-nvalve-seat j and a stem passed through said sleeve and protruding from the enter end 10 ,thereof.\ 7

1 6. In a pneumaticst obl, ,t-he comb in afizion .o fva valve-easing Closed at one end and 1m h ,i'ng aninlet-0pening and a passage for lea ing the motive-agent to the workingarts 7 15 of the tool, a bush ng threaded into sai' cas- 3,5, trudiiig fromlth'enouter endthereof, end a 1 coil-spring-wit hin the bushing between said -;;valve and the closed end-oiisaid casing.

17 .--In a pneunmtig-tool, the mmbination r of a hendlehaving anintegralvalye-chamm be; providedfwith an inlet-opening and an out-lebopening, albushin'g within said valve ber provided with an inlet opening outlet openmg, said openings being;

chemberfhm ing an inlebporl; amid m1 bui- 1et=p0rt 'in registration with. said? inlet end outlet-openings, a sleeve entering one eml emf said bushing, aj' valve -eciprocal within seiii bushing, a spring acting against the imam end of said valveyand means whereby said va'hie may be manually depressed m CGIHHLEX aet th e pressure of semi springs,

18. Ina pneumatic tool," the combin'etioii of a handle having an integral valve chemand 2m slightly out. of alinement,-- a bushing Within said vsilye chamber having an inlet pert anfi an outlet port in registration with seial inlet and outlet openings, a sleeve entering one end of said bushing, a valve reeipmcal with in said bushing and et'range in open ancl close both the inlet and. outlet ports e sparing acting against the inner end of said valve,

and means whereby said valve may be menually depressed t0 euntergxct the pressure ef said spring;

In testimony whereof, I have th isdey of December, IQlL-aEXed'my signature in the presence of two subscribing Witnesses,

GHARLES A. FAESEfiLER,

Witnesses:

JOHN B. PORTER, Y

D. H HARPER.

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