US2413542A - Pressure fluid driven tool - Google Patents
Pressure fluid driven tool Download PDFInfo
- Publication number
- US2413542A US2413542A US432501A US43250142A US2413542A US 2413542 A US2413542 A US 2413542A US 432501 A US432501 A US 432501A US 43250142 A US43250142 A US 43250142A US 2413542 A US2413542 A US 2413542A
- Authority
- US
- United States
- Prior art keywords
- piston
- tool
- pressure fluid
- driven tool
- fluid driven
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/06—Means for driving the impulse member
- B25D9/08—Means for driving the impulse member comprising a built-in air compressor, i.e. the tool being driven by air pressure
Definitions
- the piston 24' has agroove lli'n which an- 011- less ring (not shown) may optionally ,be used At its forward end" the plstona has an; integralimpact boss which'm'oves'irom. the position shown in Fig; 1' to about theiront end 46 0i the barrellli on the power stroke'ofthe piston.
- a screw-stud Iii-insleevefl has its end 'ext'end insinto a: longitudina1.,slot "*in tool holder-152"" and permitsgthe toolholder to. be. shiitedi bacit in the sleeve as the user'pushes thedevice toward the work against the resistance. 01'. sprin ll.
- The; device is thus. capable of positioning the endioi portion 51 at an: optimum position to-receive. the. most eilfective impact rrom'the piston.
- The-holder 52 has a socket 51 in which atool such as a riveting tool 58-is removablyr'etained; A sprin'ga pressed ball in holder [3 enters aroove Slain the tool to effect a, simple and.' effective removable connection.
- atool such as a riveting tool 58-is removablyr'etained
- a sprin'ga pressed ball in holder [3 enters aroove Slain the tool to effect a, simple and.' effective removable connection.
- the device is desirably" operated on" a constant fluid; pressure source :oi from fifty to one, hundred pounds. It is economical of Dowerbecause oi'its remarkably rapid delivery oir'blows of'resulateddegrees; oi" impact fonthetooli The speed-of reciprocation of the piston may" be conservatively stated to exceed therate-"ofl alternation of commercially available*'A CI. electric current supply.
Description
R. R. BUTTS Dec. 31, 1946.
PRESSURE FLUID DRIVEN TOOL Filed Feb. 26, 1942 INVENTOR. fife/MM E flu is BY WW2??? Patented Dec. 31, 1946 s nz 9f. 4 e"?! 1 1 h'n l piece member Of met forlf from bne Of the stronger brees ur t mayvbe; made terialz-d'i's cast. ;..rIt holce 01 materials o ,elargezdegre and oldedi plastic a-material I my; ot;.-g a-ndi sspeed -xot 0f the barrel ilnwardlyijltowards the rear of cylindrical portion l0 and it communicates with the inside of the bronze bearing liner forming an 99 ne nrheiei 521M114; "o nards the rear en d of M h fl tbgether ,ae n x of t e r001 9i h ldin he :snflnss; in I nli rm s n action The pi slt'on wall is provided ledh le andyh 33 respectlyely. ,In #QQ E lQt v-Qi piece ll of the trigger and convert such pressure I f anassas into a downward movement of rod-fl'which unseats ball valve 35: against theeresistance oi v its spring to admit fluid: pressure-from ausuitable source (not shown) by way'of' the nipple: 31E
From the foregoing itpwill beapparent. that-the conveniently'shaped and balanced-tool is subject'- to easy control by the hand otthe" user'who manipulates the -tool.- The operati'onof the struc- 4" work. By an lnitiallyglight. pressure oi'j the entire device; while'iholding the triggersplece'fl in, the
user'may proceedtopositionethe tool=without deliveringanyimpact-whatever. When. the'tool is ture thus far'd'escribed isas iollow'si" Assuming the trigger piece 4| to be-depressed and; the ballvalve 35-unseated; allowingithefiow of pressure:
will initially enter'annular groove-23' becauserzthe; springs lltend. to position piston ll sothat said,
groove is in at least partialregistry with theport holes 3| intothe hollow'interi'orNiofthepiston and therear end of .the cylinder bore constituted by part of the liner [2* and thewell 131'. Thispressure rapidly. urgespistonrfll forwardly 'and in doing so exerts increasing tensionfion the springs 21; piston is precludedfrom' compression by theprovision of such vents as 2i and? When the" forward wall 26.01 the annular groove reaches-- exhaust ports 20, the fluid-pressure; which has built up behind the" piston, is exhausted with great rapidity" and at the same" times: theskirt Air" in the" cylinder ahead? of the portionof the piston has closediofl the ln-let' port' ll; The exhaustof the built up 'pressure'through exhaust ports 20 isfvery-"iast and, I--have-iound, on' prolonged continuous operation :.of the tool, that the barrel remains substantially coldid'espite an almost incredible speed of reciprocation: This; is apparently due to the'expansi'on of the rapidly unloadedpressures which'are built-211p in: thextool; functioning" in accordancewith' Well kn0wn"prin--- cipies of refrigeration.
The piston 24' has agroove lli'n which an- 011- less ring (not shown) may optionally ,be used At its forward end" the plstona has an; integralimpact boss which'm'oves'irom. the position shown in Fig; 1' to about theiront end 46 0i the barrellli on the power stroke'ofthe piston.
On the i'ront'of' the ban-e1 Il a sleeve lT'is-re movablysecured; as by screws II: Thesleeve 41 has an internalannular shoulder l9, thGzCGIl ter bore 500! which slidably receives the reduced end ii of a'tool'holder E2 A=--"coili spring Misunrounds the end'Si of the t'oolhold'er'and the ends of the springabut the shoulder flof the: sleeve and shoulder 54' of the toolholder respectively, thus yielclablyurgingthe' end'of the reduced' 'portion ll out of the'range-ofthe impact boss during reciprocation of. the-piston.
A screw-stud Iii-insleevefl has its end 'ext'end insinto a: longitudina1.,slot "*in tool holder-152"" and permitsgthe toolholder to. be. shiitedi bacit in the sleeve as the user'pushes thedevice toward the work against the resistance. 01'. sprin ll. The; device is thus. capable of positioning the endioi portion 51 at an: optimum position to-receive. the. most eilfective impact rrom'the piston. The-holder 52 has a socket 51 in which atool such asa riveting tool 58-is removablyr'etained; A sprin'ga pressed ball in holder [3 enters aroove Slain the tool to effect a, simple and.' effective removable connection. I
In use as a rivetinggurr" (as. illustratedi the hollow heading cup Iii-in the inserted toolmay-b'ea positioned over the-endof a rivet to be headedup and is then yieldably held in ac'entralized position as the user presses the device toward the properly positioned: the user: merelypushes' the work whileathe; piston. is -.reciprocating without delivering any impact to:the work, and that the tool: is thus properly located' without' actual or mental i hazardl}, Thereaftenzthe impact blows are delivered'iat an." amazingly; high. rate by merely pressing; the entire devicer a; little; morev heavihr toward the workagainst the; resistance of the spring: 53; Little" eflo'rtiis-i required to holdthe device the desired position operation 1 on thework-i'because:thereris neltherzviolent vibration norIkick-back' on-the canine. In riveting operations 1 the user proceeds with confidence and ease'due to'the fact that by a sli'ght withdrawal movement ofthedevice or by -the=reiease oi finger pieceli', or both; thedelivery-zof 'impact blows to the tool ceases instantly; Over+driving of rivets "and; damage 'to the work areavoided easily because of this" double 2 control which does not entail removal or thetool? from. its; critical posiftion on'thework; It ispractica-lly impossible to stall the action' ot' the-device-accidentallyjor otherwise. I
The device: is desirably" operated on" a constant fluid; pressure source :oi from fifty to one, hundred pounds. It is economical of Dowerbecause oi'its remarkably rapid delivery oir'blows of'resulateddegrees; oi" impact fonthetooli The speed-of reciprocation of the piston may" be conservatively stated to exceed therate-"ofl alternation of commercially available*'A CI. electric current supply.
Inthe design 01' the; device; it may be" noted that. within limits the increase-of the" sum total area of exhaustports "increases the power of maximum attainable impact: deliverable by'the piston and also enablesthe useaot' weakersprings I-Tforthe piston. v
Various modifications of structure and design are included withinthe spirit of the invention andthetscopeoftheappendedclaim;
What is claimedisi In a selt -cooiing;iand'nonelubricated pneumatic hammer the combination: ois atcasing having acylindricallbor'e; and inlet: andrexh'aust ports respectively" communicating? with. the: bore in the periphery thereoig'i a loosely. fitting: hollowpiston open at. itsrearreciprocabl'y cmounted in said bore in thecasing-and? provided? withaan' annularly; grooved portion providedal with ports communicating -with the hollowinterior. and alter-- natel'yv communicating: with: said inlet" and exhaust; ports as the piston :reciprocates; means exerting: .a. yieldable axial retracting" pressure on.
said piston and means for controlling "airfibw' oi' motive pressureai'r to "said' iniet port', said, piston adaptedior reciprocation in non-contacting: andpressure. air lubricated relation to" saidcylindrical bore. a i
, RICHARD R. BU'I'IS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US432501A US2413542A (en) | 1942-02-26 | 1942-02-26 | Pressure fluid driven tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US432501A US2413542A (en) | 1942-02-26 | 1942-02-26 | Pressure fluid driven tool |
Publications (1)
Publication Number | Publication Date |
---|---|
US2413542A true US2413542A (en) | 1946-12-31 |
Family
ID=23716424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US432501A Expired - Lifetime US2413542A (en) | 1942-02-26 | 1942-02-26 | Pressure fluid driven tool |
Country Status (1)
Country | Link |
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US (1) | US2413542A (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2542038A (en) * | 1946-03-04 | 1951-02-20 | Howard B Lewis | Air hammer |
US2542305A (en) * | 1948-03-31 | 1951-02-20 | Young Radiator Co | Tube beading tool |
US2669840A (en) * | 1948-03-24 | 1954-02-23 | Joy Mfg Co | Pulsator operated percussive device |
US2693733A (en) * | 1950-02-09 | 1954-11-09 | Joy Mfg Co | Power hammer for mechanical tamping |
US2722918A (en) * | 1951-03-02 | 1955-11-08 | James F Kimball | Air impact hammer |
US2748750A (en) * | 1953-01-13 | 1956-06-05 | Armour Res Found | Vibrationless pneumatic impact tool |
US2787126A (en) * | 1952-12-29 | 1957-04-02 | Gen Electric | Hydraulically operated valves |
DE1122460B (en) * | 1959-02-13 | 1962-01-18 | Ind Diffusion Murex S A L Admi | Spring hammer for strong single blows |
US3086501A (en) * | 1959-06-24 | 1963-04-23 | Henry E Kyburg | Fluid-operated hammer |
DE2207961A1 (en) * | 1972-02-21 | 1972-08-30 | Bosch Gmbh Robert | TOOL HOLDER ON PORTABLE MOTOR-DRIVEN HAMMER |
US4168751A (en) * | 1975-05-07 | 1979-09-25 | Foresight Industries | Driver tool |
US4545440A (en) * | 1983-04-07 | 1985-10-08 | Treadway John E | Attachment for pneumatic hammers for punching holes of varying size |
US4648609A (en) * | 1985-01-22 | 1987-03-10 | Construction Robotics, Inc. | Driver tool |
DE4136524A1 (en) * | 1990-11-06 | 1992-05-07 | Nitto Kohki Co | Hand-held compressed air tool |
US20050109407A1 (en) * | 2003-11-24 | 2005-05-26 | Bass Gary S. | Valve |
US20060096285A1 (en) * | 2004-11-10 | 2006-05-11 | Bass Gary S | Valve |
US20160271778A1 (en) * | 2015-03-21 | 2016-09-22 | Chih Kuan Hsieh | Fixing Structure for Cylinder |
-
1942
- 1942-02-26 US US432501A patent/US2413542A/en not_active Expired - Lifetime
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2542038A (en) * | 1946-03-04 | 1951-02-20 | Howard B Lewis | Air hammer |
US2669840A (en) * | 1948-03-24 | 1954-02-23 | Joy Mfg Co | Pulsator operated percussive device |
US2542305A (en) * | 1948-03-31 | 1951-02-20 | Young Radiator Co | Tube beading tool |
US2693733A (en) * | 1950-02-09 | 1954-11-09 | Joy Mfg Co | Power hammer for mechanical tamping |
US2722918A (en) * | 1951-03-02 | 1955-11-08 | James F Kimball | Air impact hammer |
US2787126A (en) * | 1952-12-29 | 1957-04-02 | Gen Electric | Hydraulically operated valves |
US2748750A (en) * | 1953-01-13 | 1956-06-05 | Armour Res Found | Vibrationless pneumatic impact tool |
DE1122460B (en) * | 1959-02-13 | 1962-01-18 | Ind Diffusion Murex S A L Admi | Spring hammer for strong single blows |
US3086501A (en) * | 1959-06-24 | 1963-04-23 | Henry E Kyburg | Fluid-operated hammer |
DE2207961A1 (en) * | 1972-02-21 | 1972-08-30 | Bosch Gmbh Robert | TOOL HOLDER ON PORTABLE MOTOR-DRIVEN HAMMER |
US4168751A (en) * | 1975-05-07 | 1979-09-25 | Foresight Industries | Driver tool |
US4545440A (en) * | 1983-04-07 | 1985-10-08 | Treadway John E | Attachment for pneumatic hammers for punching holes of varying size |
US4648609A (en) * | 1985-01-22 | 1987-03-10 | Construction Robotics, Inc. | Driver tool |
DE4136524A1 (en) * | 1990-11-06 | 1992-05-07 | Nitto Kohki Co | Hand-held compressed air tool |
US20050109407A1 (en) * | 2003-11-24 | 2005-05-26 | Bass Gary S. | Valve |
US7537027B2 (en) | 2003-11-24 | 2009-05-26 | Campbell Hausfeld/Scott Fetzer Company | Valve with duel outlet ports |
US8015997B2 (en) | 2003-11-24 | 2011-09-13 | Campbell Hausfeld/Scott Fetzer Company | Valve for a pneumatic hand tool |
US8430184B2 (en) | 2003-11-24 | 2013-04-30 | Campbell Hausfeld/Scott Fetzer Company | Valve for a pneumatic hand tool |
US20060096285A1 (en) * | 2004-11-10 | 2006-05-11 | Bass Gary S | Valve |
US7140179B2 (en) | 2004-11-10 | 2006-11-28 | Campbell Hausfeld/Scott Fetzer Company | Valve |
US20160271778A1 (en) * | 2015-03-21 | 2016-09-22 | Chih Kuan Hsieh | Fixing Structure for Cylinder |
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