US1385497A

US1385497A - Air-pump

Info

Publication number: US1385497A
Application number: US322817A
Authority: US
Inventors: Patrick M Scanlan
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-09-10
Filing date: 1919-09-10
Publication date: 1921-07-26
Anticipated expiration: 1938-07-26

Description

P. M. SCANLAN.

AIR PUMP.

APPLICATION FILED sEPT.Io,1919. IzfNzwED IAN.2I. 1921.

1,385,497. Patented July 26, 1921.

UNITED STATES 1 PATENT OFFICE.

. 'PATRICK M. SCANLAN, 0F BROOKLYN, NEW YORK.

'AIR-PUMP.

Specification of Letters Iiatent. Partgntgd t111137.26., 1921 Application filed september 1o, 1919, serial No. 322,81?.A Renewed January 27, 1921'. f seriai No. 44o 529 To all tlg/tom t may concern:

:Be 'it known that I, .Farmen M. SCANLAN, a citizen of vthe UnitedStates, and residing at: Brooklyn, in the countyl ofKings and State of New York, have invented certain new and useful. Improvements in Air- Pumps, of which the following is a specilication, such as will enable those skilled in the art' to which it appertains to make and use the'same; l l

This invention relates to air pumps and particularly to devices of this class designed iioi' use in iniiating pneumatic tires, and the object thereof `is to provide an air pump which is simple in construction, eicient in operation and which can be operated more conveniently or easily than other devices of its class and with the exertion of a minimum cilort orV power; a further object being to provide a portable pump which involves foldably connected parts which may be com'- p'actly folded together whenk not in use; and with these and other objects in View the invention consists in an air pump constructed and operated as hereinafterV described and claimed. e p

The invention described and claimed herein is an improvement on that described 'and claimed in a prior` patent granted to me April 22, 1,919, and numbered 1,301,751; and is fully disclosed in the following specification, of which the accompanying drawing forms a part, in which the separate parts of my limprovement are designated by suitable reierence characters in each of the views, and in which Figure 1 is a side view of a pump and indicating the operation thereof, and with part of the construction rbroken-away and in section;

Fig. 1 is a view similar vto Fig. 1 but showing only a detail of the construction on an enlarged scale, and showing such detail in section; l

Fig. 2 is a partial section on the line 2 2 of Fig. 1; l

Fig. 3 is a partial section on the line 3 3 of Fig-2 and on an enlarged scale;

Fig. 4 is a partial section on the line 4 4 of Fig. 1 and on an enlarged scale; and,

Fig. 5 is a partial section on the line 5 5 of Fig. 1 and on an enlarged scale.

In practice, I provide a base 10 which is stamped from sheet metaland is approxi-l pivotal connection` for a 'lever,15 with the` base 10. n The lever 15' is also preferably stamped Irom sheet metal and is of U-shaped' form, or. comprises parallel side members 16 Joined at one end by an integral cross head 17, andjthe free ends 180iwhich are vrotatably mounted on `the pin or bolt 14, asl clearly shown iii Fig.k 2. A transversev plate 19 is secured or mounted between the side members 16 of the lever 15 adjacent to the cross head 17, and which in` combination with said cross head forms a support for a detachable handle member 20, the inner end of which is provided'with la rod 21 which passes through the cross head 17, and is threaded into the transverse plate 19, as clearly shown inFig. l.

Pivoted to the base as shown' at 22 is a supplemental base member 23 composed of two similarly formed strips 24 vjoined at their free ends' by .a cross rod 25. vA yokeshaped member v26 is l rotatably mounted on the' rod 25 betweenthey sides 24 of the supplemental base member 23, and mounted in ronnection with lsaidI Yyokeshaped member is a cylinder frame' member' 27 in which a pumpcylinder 28 is mounted. A

Theframe member 27 isfstam'ped from sheet metal andv consists of parallel side members 29 `joined at'the top by an integral cross head 30 land to the base of which is secured a transverse plate 31 which joins the free ends of the' side members 27. The lever'l, or the side members 16. thereof, are pivotallyy connected tothe side members 29' of the' iramefmeinber 27 vby bolts 32 passed'therethrough,l as clearly shown in Figs. 1 andp..kk i i A 'i Thecylind'er 28 isv closed at `its upper and lower ends by cap lplates'33andf34, and a tubular .piston .rodi 35 is adapted to pass 28, and mounted on said piston rod within the cylinder is a piston 36. The protruding` end of the piston rod passes .through abushing construction which consists of an inner sleeve nut 37, to which is'secured an outer sleeve nut 38, the latter sleeve nut being adjustably mounted in the cross plate 31 of the frame member 28, this construction be,- ing'clearly shown inFig. 1. The piston rod also passes through' the crossl'head39 of Y member 40, whereby arubber hose may bey connected With andl placed in communicatioliwvth said coupling member 40` in the usual manner. A

The' piston 36, in the form of construction shown, is made up of' a plurality of fibrous strips or

disks

43, 44 and 45, the disks .43

and 45 being preferably composed of cork or felt,f\'vhile t e strip 44 is preferably composed of leather, andthese strips or disks arey held in position by a plurality of metal .l disks 46, which are mounted on the inner end portion of the tubular pistonrod and held in place by a nut 47 secured to said rod. A valve device 48 is mounted in the inner end portion of the 'rod 35, said valve device being provided With a Vvalve member 49, which is adaptedl to control -thepassage of air from the cylinder into and through Said tubular piston rod through ports or passages 50 in said valve device.

A, catch ,andv lock device 51 is pivoted to the inner face of one 0f the sides 11 of the base 10, as shown in Figs. 2 and 3, said device being provided Withtwo nose portions 52, one of Which is adapted to operate in connection vwith a pin 53 mounted on the free' end portion of one of the sides 24 of the supplemental base member 23, and the other of which is adapted to operate in connection with apin54 secured to the side 11 with which the-device '51 is connected. The catch and lock device 51 serves to-hold 'the supplemental base member 23 in the position shown in -full v lines in Figs., 1 and 3, While the pump is in operation, but will permit of the folding of said supplemental base member 23 into the position shown in dotted lines in Fig. 3, in folding the separate parts of the pump together. A

V The distinctive features of this construction over that shown and described in the patent hereinbefore referred to, are the supplemental base member 23, the connection of the pump mechanism involving the frame 27, cylinder 28 and vpiston rod 35 With the base 10. orsaid supplemental basey and the connection of the lever 15 With the frame 27, whereby it Willgbe seen that a greater lever stroke is obtained at a greater leverage thus roducinv a more owerful um mechab nisrn. By providing the supplemental base member 23, the various parts of the pump involving the lever 15, the frame 27 and cylinder. 28 may be compactly folded together as is partially Vindicated in dottedlines in Fig. r1, as Well as in Fig. 3, it being understood that the handle member 20 is detached from the lever 15 in this operation.`

It will also be apparent that While I have shown a specific formofA piston and valve device mounted in the inner end portion of the tubular piston rod, that my invention is not limited to this construction, nor to the various other details of constructionherein shown and described, and changes therein and modifications thereof may be made, Within the scope of theappended claims, Without departing from the spirit ofmy invention or vsacrificing its advantages.

`It will also beseen that another distinctive feature ofthis invention over that described in my lprior patent lies in the construction ofthe base 10 of a single strip of material bent into approximately U-shaped form, the free ends of which are joined by a pin or boltand the central portion of which is reinforced b y a U-shaped strip 55, which is rivetedor otherwise secured to the sides 11 of the base 10, as is illustrated in Figs., 2 and 3. This openwork construction simplifies the manufacture of the base and also cheapens the cost thereof by reason of the saving of material as Will be apparent. It Will also be noted that the sides 11 arerecessed at the top asl shownat 56 to form a foot rest in the use of the pump, it being un derstood that the operator places one or both feet upon the .base 10 to hold it in vproper position, While the lever 15 is operated by liand.

Having fully described my invention, what l claim as new and desire to secure by Letters Patent, is

1. A device of the class described 'comprising a base, and an airpump mechanism involving a pump cylinder, a piston in said cylinder and a rod connected Withsaid pistonV and passing out through one end of said cylinder, a supplemental base movably mounted. in saidbase, meansfor pivota-lly connecting the protruding end of the piston rod in connection ywith said supplemental base, and an operating 'lever pivoted to the base and pivotally connected With said pump mechanism. y

2. A device of the class described coinprising a base, a supplemental base movably mounted therein, a pump mechanism involving` a pump cylinder, a piston in said cylindei' and a rod connected with said-piston and passing out through one end of said cylinder and pivoted lto said supplemental base, a 'frame member in which said cylinder is mounted, and a lever pivoted to said base and pivotally connected With said frame member.

. 3. A device of the class described comprising a base, asupplemental base pivotally mounted in connection therewith, a pump `mechanism involving a cylinder, a piston in ber pivotally mounted in connection with said supplemental base and to which the protruding end of said piston rod is connected, a frame member in which said cylinder is mounted, a lever pivotally connected with said base and provided atits free end with a detachable handle member, and means for pivotally connecting said lever with said frame member below the central portion of the cylinder.

4. A device of the classv described comprising a base, a supplemental base pivotally mounted in connection therewith, a pump mechanism involving a cylinder, a piston `in said cylinder, and a tubular rod connected with said piston and passing out through one end of said cylinder, a yoke-shaped member pivotally mounted in connection with said supplemental base and to which the protruding end of said piston rod is connected, a frame member in which said cylinder is mounted, a lever pivotally connected with said base and provided at its free end with a detachable handle member, means for pivotally connecting said lever with said frame member below the central portion ot the cylinder, and a coupling member mounted in connection with said pivoted yoke-shaped member and with which a iiexible hose is adapted to be connected.

5. A device of the class described comprising a base, a supplemental base member pivotally mounted in connection with said base, means for locking said supplemental base member in connection with said base in one position thereof, and means for pivotally connecting a pump mechanism with said supplemental base member.

6. A device of the class described comprising a base, a supplemental base member pivotally mounted in connection with said base, means for locking said supplemental base member in connection with said base in one position thereof, means for pivotally connecting a pump mechanism with said supplemental base member, said pump mechanism involving a cylinder, a piston in said cylinder and a ltubular 'rod connected with said iston and assino out through one end C b of said cylinder, and a lever pivoted to said base and in operative connection with said cylinder.

7. lA pump device of the class described comprising a substantially U-shaped base, a supplemental base member pivotally mounted between the sides of said base adjacent to the cross head end thereof, a lever pivotally mounted in connection with the free ends ot' the sides of said base, a pump mechanism involving a cylinder, a piston and a rod connected with said piston in passing` out throughv one end of said cylinder, a frame member in which said cylinder is mounted, means for piv'otally connecting said lever with said frame member, means for'pivotally connecting the protruding end of said rod with said supplemental base member, said supplemental base' memlber being adapted to be moved into two positions within said baseV in folding the separate parts of the pump together and extending the same when in use, and a catch device for locking the supplemental base member in connection with said base when the parts of the pump are in operative position.

In testimony that I claim the foregoing as my invention I have signed my name in presence of the subscribing witnesses this 9th day of September, 1919.

PATRICK M. SCANLAN.

Witnesses:

C. E. MULREANY, H. E. THOMPSON.