US1786715A

US1786715A - Valve-lifting tool

Info

Publication number: US1786715A
Application number: US428032A
Authority: US
Inventors: Kaufman Adolph
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-02-01
Filing date: 1930-02-01
Publication date: 1930-12-30
Anticipated expiration: 1947-12-30

Description

Dec. 30, 1930. A, K

VALVE LIFTING TOOL Filed Feb. 13, 1930 INVENTOR. fldol ufi Kaufinan B Y A TTORNEYS.

Patented :Dec. so, 1930 ADQLPH KAUFMAN, or FAIR-FIELD, oomvncrrcu'r VALVE-LIFTING' TOOL' Application filed February 13, 1930. Serial No, 428,032.

My invention relates to new and useful improvements in valve lifting tools such as are employed for I compressing the valve springs in an automobile gasoline engine to insure the easy removal of the valve.

It is an object of the invention to produce a valvefspring lifter whose engaging jaws are disposed alike tofone side of the alignment of the operating handles so as to be used as a right'or left and thereby be easily applied to a spring from either side, if a direct approach is'difiicult.

A further feature of the invention is to construct thetoolin such'a manner as to permitj it to be madeof strip metal of suitable lengths and'shapes; to provide a multiple lever structure'including a pair of operating handles and pairsof jaws hingedly and pivotally connected together in a manner to provide increased leverage and "ease of operation. M

Finallyto providefa tool, of the class described, having engaging jaws, the operative v end portions of each pair of which are made adjustable with respect to each other. so. as to better accommodate springs of different diameters and. thereby insure a firmer fitting grasp of theftool with the spring in a way to prevent the same from dropping out; and to further providefor locking the jaws in their various closedpositions, ina manner to retain the spring grasped thereby.

With these and other objects in view, the invention resides and consists inthe construction' and novel combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto ap- 4 pended, it being understood that various changes in the, form, proportion, size, and minor details of construction within the scope of the claims may be resorted to without departure from the spirit, or sacrificing any of the advantages of the invention.

. Similar characters of reference denote, like oricorresponding parts throughout the several figures ofith-e accompanying drawing forming a part of this specification; and upon to h c a Fig. 1 shows a side elevation of my improved valve spring lifting tool; and

Fig. 2 shows a top plan view of the same implement. 7

As before stated, the tool is preferably made of rolled strip steel of suitable proportions, which are cut, swedged and bent to lengths, to form roundedouter ends 7 and forwardly disposed parallel v side members 8- and 9 in-spaced relation. The lower handle also includes spaced apart

side members

10 and 11 and has secured therein a pivotal stud 12 upon which the enlarged end 13 of a bowed rod 14 is pivoted between said two parallel side'portions. The upper handle member is also provided between its forward side portions with a sleeve 15 that has trunnions journaled in holes 16 of thesaid side members 8 and 9 of the handle and is further provided with a hole 17 through which the before mentioned bowed rod lei is free to slide as in the opening and closing of the handle.

A slide 18 encircles the upper handleand bowed rod contained therein and is adapted to be positioned on the handle and rod in a way to engage various portions of the rod and hold it against sli'dab'le movement in the sleeve and in thatinanner lock'the jaws in Va;

rious adjusted positionsi The forwardends of the handle portions" are bent inward asja t 1 9; to cross each other V,

at substantially a right angle and are each then disposedforward' in substantially par allel relation and terminateiin pivotal 'end portions, thus forming each; member-of a uniformlengthjandat an equal distance'from the pivotal stud 20 that pa ses" through thefour lli) members where crossed at a right angle, as before suggested.

In this connection it will be seen that the rear side member 9 of the top handle and the front side member 10 of the lower handle are inward. slightly, as at 21, at the pivotal crossing point of the four members so as to accommodate the straight mrtions 22 and 23 at this point, of the front member 8 of the upper handle and the rear member ll of the lower handle, better to insure required clearances and. perfect hinged connections.

The head portions of the pivotal stud are positioned between the aw members in a a way to be free of the same during all operations of the same. The clan'iping jaws as before stated comprise two pairs of jaws, an upper pair formed of two pieces, 2% and 25, and alower pair formed of a like number of pieces, 26 and 27. The inner end portions of these four aw members are disposed inward as at 28 and are pivotally connected by a bolt 29 passing therethrough and also through a sleeve 30. The axis of this pivot and that of the pivot 20 at all times remain in longitudinal alignment with the tool. The forward end portions of the four members of the handle are disposed between the members, the two pivotal end portions of the lower handle member being pivotally connected to the upper jaw members 24; and by meansof a screw bolt 31, while the forward end portions of the upper handle are likewise disposed between the two

lower jaw members

26 and 27, where they are pivotally connected by means of a screw bolt 32.

A spring 33 is mounted on each of the screw bolts 31 and 32 between the end portions of the handle members so as to provide means of adjusting the jaw members of each pair with respect to each other by tightening or loosening the nuts 3% upon the screw bolts and whereby the free engaging end portions of the jaws may be opened or closed, better to accommodate springs of difierent diameters. Each of the jaws are provided with an in wardly disposed flange 35 in addition to the vertically disposed portion of said jaws, so as to form a seat upon which the opposite sides of the end portions of the spring may be seated.

From the foregoing it will be obvious that in the operation of the tool the jaw members, while in an open position, are inserted in the end portions of the spring, whereupon by the pressing together of the handles the aws are likewise closed and the spring compressed to the degree required, whereupon the handles are locked in position and the spring removed, thus freeing the valve stem for the removal of the same. 7

Having thus described my invention, what I claim and desire to secure by Letters Patcut is:

1. A valve lifting tool comprising a pair of handle members, each including two forwardly disposed portions which are deflected inward to cross each other and are pivotally connected together and have their end portions disposed forward in substantially parallel relation to each other, two pans of jaw members having their ends disposed rearward of the pivot connecting the handle members and pivotally connected together, the two members of the upper pair of jaws being pivotally connected substantially midway of their length to the forward end portion of the lower handle members, the two members of the lower jaw being pivotally connected intermediate of their lengths to the end portions of the upper handle, the engaging ends of the jaws of each pair being disposed in spaced relation to each other and in substantially operatable alignment with that of the cooperating pair of jaws.

2. A valve lifting tool comprising a pair of handle members, each including two forwardly disposed portions which are deflected inward to cross each other and are pivotally connected together and have their end portions disposed forward in substantially parallel relation to each other, two pairs of aw members having their ends disposed rearward of the pivot connecting the handle members and pivotally connected together, the two members of the upper pair of jaws being pivotally connected substantially midway of their length to the forward end portion of the lower handle members, the two members of the lower jaw being pivotally connected intermediate of their lengths to the end portions of the upper handle, the engaging ends of the jaws of each pair being disposed in spaced relation to each other and in substantially operatable alignment with that of the cooperating pair of jaws, the said jaw members being bent to one side of an imaginary center line extended through the handle and pivotal centers.

3. A valve lifting tool comprising a pair of handle members, each including two forwardly disposed portions which are deflected inward to cross each other and are pivotally connected together and have their end portions disposed forward of said pivotal connection, two pairs of jaw members having their ends disposed rearward of the pivot connecting the handle members and pivotally connected together, the two members of the upper pair of jaws being pivotally connected substantially midway of their length to the forward end portion ofthe lower han dle members, the two members of the lower aw being pivotally connected intermediate of their lengths to the end portions of the upper handle, the engaging ends of the jaws of each pair being disposed in spaced rela-v tion to each other and in substantially oper it 7 atable alignment With that of the cooperat- --ing pair of jaws, and means for adjusting. the distance between either or both pair of jaw members. e

4. A valve lifting tool comprising a pair of handle members pivotally joined together and having forwardly disposed ends, jaw members having their inner end portions pivotally connected together and their inter- 10 mediate portions pivoted to said vforwardly disposed ends, a rod hingedly connected to one of the handle members, a swivel mounted in the other handle and having a hold therethrough to receive and permit of the sliding I engagement of the rod, and a slide mounted upon one of the handle members to engage the rod to lock the handles together.

Signed at Bridgeport, in the county of Fairfield and State ofConnecticut this 12th 30 day of February A. D. 1930.

ADOLPH KAUFMAN.