US2377157A - Utility hammer - Google Patents

Description

May 29, 19 5- E. N. KINDLAND UTILITY HAMMER Filed NOV. 13, 194

ERIGKNKINDLAND,

Patented May 29, 1945 STATES Mr armor:

a I Q 2,377,157 I UTILITY; HAMMER Erick-N. Klndland, Jamestown; N. 7 Application- November 13, 1941; Seitiahldo; 418;98-8

This; invention relates: to. a.

hammer:. I It. is aimed. to; provide: such; a; hammer: having maximum! semiceability and: durability; which: is well; balanced. and. has. w novel striking surface cit-surfaces of. plastic: materiah to; provide great toughness and: avoid; stretching: of? the metal hammeredzthereby; Whi le=Ii mainly aim: tog pro:- vide plastic headsgzl may some instances: use heads of wood, lead, rubber, copper or other. ma:- terials: which may: be.- suitable: for the. particular work at handi Qne special field: of? use: ion the hammer isin straightening or" reshaping auto:- mobilea bodies and: fenders or: any other sheet metal: surface;. this; endv being: attained without stretching! of the metal such 8S5takS2p1EC when atmetallie hammer head; is used; The plastic surface or surfaces render the. hammer: a. non:-

oonductor. of: electricity. a I

a second object; is toiproyide such; a hammer having a solid or tubular" bodyprovided with' a handle and mounting plastic heads at opposite end'sa of. the: tubular body.. Another object is to provide a hammer with the said heads wedged into the ends of the tubularbody, in some forms having a core engaged by the heads, and novel interfitting means between the body and heads, and which may be interfitted with a handle shank.

' A further object is to provide the tubular body of such construction as to enable the molding of the core therein.

Th more specific objects and advantages will become obvious andin part will be pointed out in the description following taken in connection with accompanying drawing illustrating operative embodiments of several examples of the practice of the invention.

In said drawing:

Fig. 1 is a plan view, partly broken away, of one form of hammer carrying out the invention;

Fig. 2 is a view primarily in central vertical section through the hammer head;

Fig. 3 is a perspective view of the anchor rod used in the hammer of Figs. 1 and 2;

general utility Fig. 4 is a view primarily in central vertical section through a modified form of hammer head;

Fig. 5 is a view primarily in central vertical section through a second modified form of hammer head;

Fig. 6 is a detail perspective emphasizing the connection between one of the anchor studs and heads as used in the last mentioned modified form;

Fig;. '7) is. a view primarily in: central vertical section through a finali modified. form: of, ham-,-

mer'head, and; I

Eight; is. try perspectiveiview of the body tube used insa-idi final form: of hammer head.

Referring specifically; to the; drawing; and first to: the form offhgsz 1.1301-3, lzprovide'a hammer head: structure: In consisting; of.striken heads I .I, aw mounting body therefor, im the form: of a tube Iziandi az'core; t3 andan anchor rod Mt. Saidhead structure 'is carriedrby a metallic. handle shank or: nod Ifiin turn: equipped: with a: woode or otherihan'dle: I6- fastened thereon with: the. aid ofi ai'fernulev II...

Such body tube I2 is metallic on plastic but preferably of; steel and: of: any; desired: configuration im crossesection, for; instance: round, as shown; The innen-or. bore; wall-of the: tube at eachiendt is accurately machined'to. provide out:- wardly fiaringr or tapered. surfaces on sockets I ll.

Saidi core:- Iil at; its ends: terminates in. the same: planes: as: the: frustums of. the: sockets, I8. 'Illiis=..c.ore Id is preferably metallic, usually. of lead, and is poured in a molten state through an opening 20 into the tube l2 whose open ends are temporarily plugged. Before pouring the core I3, handle'shank I5 is driven through an opening 2| in tube l2 and its adjacent terminal 22, is driven through another opening 23 in such tube and then upset as at 24. .Lugs or burrs 25 are struck integrally from shank I5 and tightly against tube vI2. The anchor rod I4 has a flattened portion 26 to better secure it in th lead core and it is provided with an opening 27 through which shank I5 pasess.

After assemblyof the tube I2, handle shank I5, anchor rod I 4, and core I3 as just described, the striker heads II are applied to the tube I2. These striker heads II are of'exceedingly hard and tough plastic material and are accurately machined so as to have end portions 28 in oversized conformity with sockets l8 and which are press-fitted or driven friction tight into the said sockets I8 and into adhesive contact with the walls thereof. Y

Said striker heads II have central longitudinal recesses 29 terminating short of their striking surfaces whereby the latter are solid and unbroken, and such recesses are of slightly under sized conformity to the shape and size of the ex" tremities or studs 30 of the anchor rod I4 which may be of steel or other metal, onto which the adjacent striker heads II are. press-fitted or driven at the same time such heads are press fitted or driven into the sockets I8, so as to be in adhesive contact therewith. Said extremitiesof the anchor rod M are preferably undercut or roughened as at 3| to enhance the bond or connection. The hammer thus produced will be well balanced and is of general utility, with the added advantages attributable to the plastic heads or striking members H. Since such striker heads H are of plastic material, they particularly do not stretch or reduce the thickness of metal or other material which is struck thereby and which is a decided advantage in the straightening and reshaping of automobile bodies and fenders,

Various changes may be resorted to provided they fall within the spirit and scope of the invention. For instance, I may use the modified form of Fig. 4. In this form, the anchor rod I4 is omitted and the bore of the tube, which is here shown at I2 is of the same diameter throughout. An anchor stud 32 preferably of steel, is fastened in any suitable way to one of the striker heads I l before the latter is applied to the tube and it occupies a recess 33 in the lead core l3. Such lead core has an integral stud 32' occupying a recess 33' in the other head ll. Said studs are fastened to the core and head by pins 34 of lead, steel or other metal passed through aligned openings 35 in the studs, core and tube. One or more anchor pins 36 disposed at any or various angles may be carried by the handle shank and at opposite ends extend into the core. It is to be understood that if desired, instead of using the different studs 32 and 32', both of them may be like stud 32 or stud 32 and associated parts.

Another modified form is shown in Figs. 5 and 6. This form has plastic striker heads Il like those at H which are attached to anchor studs 30 of the same shape as studs 30 and in the same manner in which heads H are attached to anchor studs 30 except that the studs 3|] are shown as polygonal in cross-section, specifically hexagonal, rather than round. The studs 30,

however, are separate and carried by and rigidly fastened to a solid body or core 13 of iron, steel, lead or other metal to which a handle shank I5 is suitably secured.

In the remaining modified form of Figs. '1 and 8, the structure has a body tube I2 carried by a handle shank [5 The body has sockets l8 like those at 18 in which plastic striker heads II are press fitted or attached as in the first form of the invention. The core such as l3 may be omitted. At either or both sockets, pins 31 may be passed into the heads I l or if preferred, either or both sockets may have any desired number of lugs 38 struck therefrom and occupying recesses 39 in the heads. Such pin 31 or lugs 38 may similarly be employedin the forms of Figs. 1 to 3 and Fig. 4, if desired.

' I claim as my invention:

1. A hammer head comprising a tubular wall providing a relatively deep taper socket with the larger end outermost, a central stud in the socket of approximately the length of the latter surrounded by said wall, a part extending transversely through said head and stud to prevent relative turning thereof, and a plastic striker head having a tapered portion wedged in said socket provided with a recess receiving and interfitted with said stud, said striker head thereby being jointly gripped between the socket wall and stud.

2. A hammer head comprising a body member having a tubular wall providing a relatively deep socket at one end, a core in the .body member inwardly of the socket and immovable relatively thereto, a stud member stationary in the core extending into the socket and surrounded by the wall, a hard plastic striker head jointly gripped between the socket wall and stud, and handle means extending across the body, core and stud whereby the body, core and stud are immovable relatively to each other. e

ERICK N. KINDLAND.

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