US1663886A - Hammer - Google Patents

Description

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March 27, 192s.

Patented Mar. 27, 1,928.

Vmural) .STATES- ANTHONY r. Lumen, or murs, rnNNsYLvANu.

1,663,886 OFFICE.

PATENT mma.

Application led September 29, 1926.' Serial No. 138,510.

r work.

Theprimary object of this invention. is to provide a hammer by means of Whlch nails ma be driven in wood without damaging the atter by dents or cuts, such as will occasionally happen when the person using the hammer misses the nail to be driven, or when the latter is `nearly driven home. Another object of this invention is to provide a hammer having wood protecting means which can be easily applied, or removed for renewal. f A further object of this invention is to provide a wood protectlng device which can loe-readily attached to a common carpenter hammer, and removed therefrom Iwhen not needed. Still another object is the provision `of sucha hammer which is sim le in constructiom'and which can be manu actured at relatively low cost. Additional features and advantages of this invention will appear'from the following description considered in connection with the accompanying drawing forming part of this application, and in whichr' `Fig. 1 is a fragmentary vlew, partly 1n section, of a hammer provided with the simplest form of my invention.

Fig. 2 is a sectional view through the.

strike-head of a hammer showing a. 'modification of my invention.

Figs. 3, 4 and 5 show additional modifications of my invention adapted to be used v in connection with especially built hammers.

Fig. 6 4shows another modification of my invention adapted for use in connection with an ordinary carpenter hammer.

Fig. 7 represents still another alternatlve construction of my invention, also adapted to be used with an ordinaryl carpenter hammer. i

As is well known, it is customary for a carpenter doing first class woodwork, such as for interior trimming or cabinet work,l to drive nails partl with an ordinary hammer and then drive t enail home by means of a so-called nail-set', for the purpose of not damaging or indenting the wood. v However,

if the carpenter misses the nail, being on account of carelessness or because sa1d na1l i is in a very inaccessible place, the woodwork is more or less indented and` 'a great deal of refinishing with planers, files or sand-paper ,becomes-necessary to remedy the harm done.

vmay be secured..

- Referringto Fig. l, the strike-head 1 of the hammer has been turned down to roduce a core 2 and a shoulder 3 upon w ich is placed the resilient rubber ferrule 4 which is secured on the core in any desired manner, such as by cementing or by relying on the elasticity of the ferrulev proper. The composition of the latter must be such that it will not mar the woodwork while 'at the same time it will prevent the outer face of the core 2 from coming in contact with the woodwork.

Inl the modified construction shown in Fig. 2, the'strike-head has been machined to produce the core 5 surrounded by the crown 6, and in the intermediate groove 7 the resilient ferrule 8 is properly inserted and secured. On account of the close fitting engagement of the latter in the groove, it is found advisable to drill in the strike-head a vent-hole 9 to enable the air confined between the. ferrule and the bottom of the groove to escape. As is well known the purpose of the crown 6, in addition to supporting the resilient ferrule, is to ermit driving nails by sidewise strokes of the hammer, in case that direct blows cannot be struck.

Fig. 3 shows one method of securing a slightly conical ferrule 10 for quick removal. In this construction, the strike-head of the hammer has been turned to vproduce the vslightly conical core 11 and the enlarged This resilient ferrule may -lar space 15 in which the. resilient ferrule f is inserted.y It will be noted in this construction that the more the collar 14 is of the l"'errule from the hammer by unscrewing 'the collar. Ify desired, locking means, such as set-screws could be furnished to prevent loosening of the collar, but in practice it appears that the frictional engagement due to the resilient ferrule is suficient to lock the collar in place. f

Another method of removably mounting the resilient ferrule 16 is shown in Fig. 4. The strike-head of the hammer has` been machined to' provide a .central conical core 17 surrounded by the crown 18 inside of which have been cut the threads 19 which are engaged by corresponding t-hreads molded in the outer periphery of the ferrule. A vent-hole 20 is also drilled in the strike-head for reasons which have been explained hereinbefore.

ln Fig. 5, the :terrule 21 is molded on a metallic sleeve 22 having a ange 23 and internal threads 24, which engage similar threads cut en the enlarged base portion 25 of the central core 26. The erruie lits within the groove 27 formed between the core and the crown 28.

My invention may also be modified to make it readily applicable to ordinary carpenter-hammers. ln the construction shown in Fig'. 6 the resilient errule 29 has a flange 30 and is centrally supported by a removable metal core 31 provided with a. Bange 32 having approximately the same diameter as the strike-head 33 of the hammer. The core is first inserted in the errule and these two parts are then clamped on the hammer by means of a cap 3l having acentral aperture 35 which its about the body portion of the ferrnle. This cap is secured on the strikehead by means oit set-screws 36`which are screwed in the diametrally opposite lugs 37 formed integrally with the cylindrical sides 38 of the cap. lli desired, the hammer may have iat spots 39 led back of the strikehead to ai'ord a better gripping surface for the set-screws.y

In the modification shown in Fig. 7 `the usual resilient ferrule employed in the above described constructions has been replaced by a thimble like resilient cap 40 having a centrai a rture 4 1 to expose the central portion o the face of the strike-head. The side l12 of this cap is preferably made slightly,

conical, as shown, to provide a better engagement with the strike-head andthe reduced part of the hammer immediately behind said head.

It will be understood,'of course, that the various arrangements l have shown are merely suggestive of many that might be adopted 'in carrying out my invention, and I do not wish to be limited to the constructions shown otherwise than as specified in the appended claims.

il claim: y

1. ln combination with a hammer, a ferrule made of resilient material and having a flange at the base thereof, and means for securing said errule to the strike-head of said hammer, said means comprising a central core tting within said errule and 'having a ange bearing on the face of said strike-head; a cap adapted to fit' about said iierrule, anges and strike head, and means for removably securing said cap on said strike-head.

2. 1n combination with a hammer, a ferrule made or resilient material and having a ange at the base thereof, and means for removably securing said errule to the strikehead loit said hammer; said means comprising a removable non-resilient core adapted to fit centrally within a portion of said errule and having an integral iange bearing on the face of said strike-head; a cap fitting about said ferrule, ian es and strike-head, and means for removab y securing said cap on said strike-head.

In testimony whereof l aiiix my signature.

ANTHONY F. LUTCH.

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