US1869850A - Lathing hammer - Google Patents

Description

vAug. 2, 1932. J. w. HENNECKE LATHING HAMMER Filed NOV. 13, 1929 Patented Aug. 2, 179372 sra NT ariete i i Josnrn w. nunnnczn or Los Ancienne', cafr.InenivreA Lernrate Hannan. Y

App'ino md noventa 13, 1929'. sel-iai No. 406,804.

This invention relates 1 to*l improvements .in lathing hammers and similar tools, `In order to fully appreciate'the nature and advantagesV of the improved lathingjhammer, abrief r- 5'- sum of the desiderata involvedin the con-4 struction of such a tool is believed vto benecessary.

Y Lathers are generally employedt on apiece work basis so that it is yhighly essential that I* the lather be capable of working asV speedily'y and as eiiiciently as possible at all1 times. vIn such work,where very littler manual'laber is wasted, it is highly essential that the, lathing hammer or lathing axe be perfectlybalanced 15 andsuitable' to the user. Itis alsolcustomary for lathers to keep the edge of th'e'blade on their iatliing hammers as4k sharp as possible;

also to keep the hammering face with a fairly` sharp knurled or roughed surface; In the course of timeV as the'blafde becomes dull' and is sharpened and re-sharpened, the length andI weight of the blade decrease, throwing the hammer out' of the customary b'lzrlance.l ,Lilie-` wise if thelrnurled orroughened surfaceonV the hammer headw'ears and becomes"si'nooth,vv

the lathing nails cannot be driven as'easily or' as efficiently with the'ha'mmer.

Heretoforawith one exception, r,it has been" customary to construct a tool ofthis char-- 3'0' acter ywith an integral or single piecefhead,` which ormsboth the hammering aceand'the' blade. As the hammering face vandblafile become worn,` throwing the tool outofperfect balance, the ultimate limit is" eventually' reached wherein the lather' discavrds'his: old tool entirely and replaces it with'a'n entirely new tool. This the usual latherdislikes do because frequently he has becomefthon.

ough'ly accustomed'to the gripy o r'the handle 40'FV oi the tool and in discarding the tool'he must reaccustom himselfto the handle 'or'gripffof the new lathing hammer.

with uitgaand other desiderata review; a-L

W'ill be appreciated thatY it is considered anobi i ject or' this invention to provide an improved lathing hammer which comprises a bodyjon which a hammering headV and ablade `are`de tachably mounted, so thatas then blade and lhammering head become worn, these parts alone can be replaced and theoldl grip orv han- Vcause it tobe out of the desired balance, 'another head which has greater or lessportions `reino-ved can be substituted therefor,

thus enabling lthe entire toolto beperfectly i' balanced in accordance with the. desire ofthe lather. Y 1 Y j ,Another object of the invention vis to prof a vide a lathing hammer or axe v-comprisinga body having a detachable blade, anda ldevtachable 'hammering head mounted thereon, with alconnection extending longitudinally through the body connecting the blade and. the hammering head .so that the hammering head on being-.tightened into place onmthe bodyI will cause the'blade to be likewise tightened in place; on the body.

AStill afurther,k object of the invention is e' vto provide a lathing hammer comprising a' body havinga bolt extending longitudinally 'i therethrough on `which the hammering head is adapted to be screwed and which is SQV constructed thatI thembolt may berrotatablv adjusted so thatwhenv the hammering headl vis tightenedllp against the body, it willv assume agproper position with respect to the body on being tightened in place.V .a Another object of the invention istoA profV vide a latvhing hammer having a. detachable hammer head and a detachable blade, whichg partsare so constructed thatuno tools will be' requiredto assemble and disassemble the parts of the hammer.

siii

VWith ,the foregoing and other-.objects in?V View, vwhich will be made manifest yin the following detailed description, and specificalf ly pointed out in the app'endedv claims, referI ence is hadto the accompanying drawing for 4an-` illustrative embodiment of the invention,

wherein Fig. 1 is a View in side elevation of the improved lathing hammer.

Fig. 2 is a View in end elevation, taken in the direction of the arrow 2 upon Fig. 1.

Fig. 3 is a view in end elevation of the hammer, taken in the direction of the arrow 3 upon Fig. 1.

Fig. 4 is a longitudinal vertical section taken substantially upon the line 4-4 upon Fig. 2, in the direction indicated.

Fig. 5 is a horizontal section taken upon the line 5 5 upon Fig. 4, in the direction indicated. y

Fig. 6 is a vertical section taken upon the line 6-6 upon Fig. 4.

Fig. 7 is a perspective view of the blade, forming a part of the improved lathing hammer.

Fig. 8 is a perspective View of the bolt, forming a part of the improved lathing hammer.

Fig. 9 is a partial view in perspective, illustrating the upper end of the body of the improvedl hammer.

Referring to the accompanying drawing, wherein similar reference characters designate similar parts throughout, the improved lathing hammer comprises a body generally designated at 10, having a shank 11 on which the grip or handle 12 is provided. The eX- act nature of the handle 12 is immaterial in so far as the present invention is concerned, it being understood that any conventional or desirable form of handle may be employed.

. There is illustrated, however, a wooden grip which is slipped onto the end of the shank and heldin place as by rivets 13. 1f desired, however, a leather grip formed of leather washers held in place on the shank 11 may be used. On the upper end of the body there is formed a body head 14, shown as being tapered in form, the large end being adapted to have a hammering head secured thereagainst. The small end of the body head 14 has a vertical groove or slot 15 formed therein, which is crossed by a wide lateral groove or recess, indicated at 16. A bore 17, which may be a hole drilled through the steel head of the body, extends longitudinally through the head 14 opposite the lrecess or notch 16.

This bore is adapted to receive a bolt 18, having one end threaded as at 19, and having a portion 20 near its opposite end formed with reduced diameter, thus defining a cylindrical head 21 on the bolt.

A blade is provided of suitable steel, which is indicated at 22. This blade is preferably of uniform thickness except adjacent its outer end where it may be beveled or sharpened to a fine cutting edge 23. Near the inner end of the blade there is formed an aperture 24 and the portion of the blade between the aperture and the extreme inner end of the blade is bowed or bent laterally as indicated at 25. This portion is equal in length to the length of the reduced portion 20 on the bolt 18, and the difference between the diameters of the reduced portion 2O and of the remainder of the bolt is such that the portion 25 will be accommodated about the reduced portion 20. Two holes, indicated at 26, are drilled through the head 21 of the bolt, Athese being arranged approximately 90 apart, and are to be used for a purpose hereinafter to be described.

On the opposite end of the body from the blade there is adapted to be positioned a hammering head 27 which has a drilled and tapped hole 28 formed therein, thus providing threads complementary to the threads 19 on the bolt 18. The hammering head 27 is shown as provided with a square flat roughened or knurled hammering face, although it will be readily appreciated that the shape of the face is immaterial and that the face instead Vof being flat may be convex, and also instead of having the roughened or knurled surface that the face may be smooth. The preferred form of construction, however, is substantially as that shown upon the drawing. The inner end of the hammering head is adapted to be tightened up against the large end of the body head 14 by screwing it upon the bolt 18.

A small hole 29 is drilled into the large end of the body. This hole receives a spring 31, which is compressed behind a plunger or locking pin 32. The locking pin 82 has a central portion of reduced size or reduced diameter, forming shoulders serving as stops engageable upon a pin or wedge 83 which pins the locking pin within the hole 29 but enables it to bel moved therein between limits. Vhen the plunger or locking pin is in projected position, as shown in Fig. 4, it enters a recess 34 in the hammering head 27, which recess has its under side open so that the end of the locking pin 32 may be engaged, as by the finger nail, and moved into retracted position in the hole 29 against the action of coil spring 31. When the locking pin is in the projected position it locks the hammering head aga-inst rotation and prevents its unscrewing from bolt 18.

As clearly shown upon Figs. 1, 4 and 5, the hammering head 27 may have recesses 35 bored or otherwise formed therein. These recesses may be of various depths and in some instances they may be continued through the entire hammering head. ln this manner the weights of different hammering heads may be varied and, by selecting a hammering head of the proper weight, the improved lathing hammer can be caused to have the proper balance in accordance with the desire of the lather.

The improved lathing hammer may be disassembled as follows. The locking pin 82 is pressed inwardly to move thelocking pin out of engagement with the hammering head 27. The hammering headl can then be unev screwed from the end of bolt v18, after which vhead of the'bolt. Assembly of the improve-d tool can be accomplished in the converse manner, by first positioning the blade 22 against theend of the bolt so that the head. 21 partially projects into aperture24, and portion 25 of the blade is accommodated around the reduced portion 20. After this is accomplished, the blade and bolt are caused to slide toward the ieft, as shown in Fig. e, causing the inner end of the blade to enter the groove or slot 15. In this position the head 27 is ready to be applied. However, the threads on the interor of the hammering head 27 cannot be accuratelyplaced so that when the head is tightened up against the body it will assume the proper position with respect thereto. lIn order to provide for this, it will be noted that the bolt 18 is cylindrical and has a cylindrical head enabl'ng it to be rotatably adjusted. The bolt is then rotatably adjusted and held in adjusted position by any suitable implement, such as for example a lathing nail, one of which is illustrated in applied'position'at 36 in Fig. 5. rihislathing nail is inserted through either of the apertures 26 and can be caused `to rotatably adjust the bolt 18 into the desired position and vhold it in this position: while the ham mering head 27 is being screwed up tight against the Vend of the body head 11i. Onlyy a small amount of experimentation is necessary .to properly vadjust the bolt 18 so lthat when the hammering head is screwed up it will assume vthe proper position with respect to the body, *as .shown upon the drawing. During the screwing up of the hammering head it 'will readily be appreciated that the locking pin 32 must be h-eld retracted against the action of the spring 31 `but after the head has 'been tightened into posit? on the locking pin can be released, locking the head against unscrewing. IVhen the tool has been thus assembled, the lathing nail 36 can be withdrawn from the aperture 26 and discarded. All of the part-s will befirmly lheld in position and the tool is ready for use. It will readily be apprecated by the improved construction that no tools, such as a wrench, or Va screw driver, or the like, need be employed in assembling or disassembling the improved tool.` The only implement which is necessary for these purposes is a lathing'nail, plenty of which are usually available.

The advantages 'th-e improved lathng hammer are briefly as follows. YTvVhen the cutting edge 23 becomes dull, thelather can 'easily and v'quickly'substitute a new blade having a sharp edge lfor the bladel of the tool, thus postponing sharpening of the blade until a more suitable time than when he is busily engaged applying laths. If the sharpening and resharpening of the blade reduces its length to any materfal extent, tending to throw the tool out of balance,the hammering head 27 may be removed and another head substituted, restoring the balance.

If the length of the blade is so far reduced as' to reduce the usefulness of the lathing hammer, a new blade maybe supplied at a small cost. In making all of these changes it will be appreciated that the handle or grip is in no way affected so that if the lather has become accustomed to the tool he will not be forced to reaccustom himself to the grip of a new lathing hammer. Under all circumstances the lathing hammer may be given the been made with the hammering face and the blade out of one and the same piece of metal, some difficulty has been experienced in obtaining the proper temper. rllhe improved construction enables these parts of the tool to have the propertemper and furthermore as the blade is of uniform thickness an even temper can be given throughout substant`ally its entire length so that in the course of resharpening the blade metal is not encountered of weaker or poorer temper, as in the case of integral hatchet heads'which usually have tapered blades.

Various changes may be made in the details of construction without departing from the spirit or scope of the inventionas defined by the appended claims. It will be understood in theV followingclaims that the term lathing hammer is not to be restricted to tools for applying laths only but that in so using the term the invention may be equally applied to similar tools used for other purposes. f

I claim:

1. A lathing hammer comprising a body, a blade arranged on one side of the body, a bolt extending longitudinally through the body, said bolt having a head adapted to engage the blade and fasten the blade tothe body, and a hammering head adapted to be screwed onto the opposite end of the bolt to cause the bolt to 'tighten the blade in place, said bolt being rotatably adjustable enabling the hammering head to be tightened into proper position with respect tothe body.

p 2. A lathing hammer comprising a body, a 'blade arranged on one side of the body, a'bo'lt extending longitudinally through the body, said bolt having a head adapted to engage the blade and fasten the blade to the body, a hammering head adapted to be screwed onto the opposite end of the bolt to cause the bolt to tighten the blade in place, said bolt being rotatably adjustable enabling the hammering head to be tightened into proper position with respect to the body, and spring urged locking means on the body engageable with the body engaging tace of the hammering head to `loclr the hammering head against unscrewing. Y.

3. A lathing hammer-comprising in combination a body having a groove on one side thereof, a blade receivable in the groove, said blade havin@ an aperture extending transversely therethrough, and means adapted to be positioned in said aperture from one side of the blade for tightening the blade against the body.

4. A lathing hammer comprising in combination a body having a groove on one side thereof, a blade receivable in the groove, said blade having an aperture extending transversely therethrough, and means extending longitudinally through the body adapted to be positioned in the aperture from one side of the blade and Aadapted to be caused to tighten the blade against the body.

5. A lathing hammer comprising in combination a body having a groove on one side thereof, a blade receivable in the groove, said blade having an aperture extending transversely therethrough, a bolt extending longitudinally through the body having a head partially extending through 'the aperture Jfrom one side of the blade, the bolt adjacent the head being of reduced eine to accommodate a portion of the blade, and means for causing the bolt to tighten the blade in the groove.

6. A lathing hammer comprising in combination a body having a groove on one side thereof, a blade receivable in the groove, said blade having an aperture ierein, a bolt extending longitudinally through the body having a head partially extending through the aperture, the bolt adjacent the head being of reduced size to accommodate a portion of the blade, and means tor causing the bolt to tighten the blade in the groove comprising a hammering head adapted to Vbe screwed onto the bolt against the opposite side of the body.

7. A lathing hammer comprising in combination a body having a groove on one side Y thereof, a blade receivable in the groove, said blade having an aperture therein, a bolt errtending longitudinally through the body havmg a head partially extending through the aperture, the bolt adjacent the head being of reduced size to accommodate a portion of the blade, means 'for causing the bolt to tighten the blade in the groove comprising a hammer- Y ing head adapted to be screwed onto the bolt against the opposite side of the body, said bolt being rotatably adjustable, and means on the bolt enabling` it to be held in adjusted position whereby the hammering head may be tightened against the body in proper position with respect thereto.

8. A lathing hammer comprising in combination a body having a groove on one side thereof, a blade receivable in the groove, said blade having an aperture ther in, a bolt extending longitudinally through the body having a head partially extending through the aperture, the bolt adjacent the head being of reduced size to accommodate portion ci the blade, means for causing the bolt to tighten the blade in the groove comprising a hammering head adapted to be screwed onto the boY '3 against the opposite side of the boc y, s bolt being rotatably adjustable, means on bolt enabling it to be held in adjusted position whereby' the hammering head may be tightened against the body in proper position with respect thereto, and means for locking the hammering head in tightened position against unscrewing, comprising a spring urged plunger in the body movable in a direction parallel to the bolt intov engagement with the hammering head.

9. A lathing hammer comprising in combination a body, a hammering head, means providing a threaded connection between the body andthe hammering head whereby the hammering head may be attached and detached, said means being rotatably adjustable so that the hammering head may be caused to assume a proper position on being tightened against said body, and a latch mounted upon the body engageable with the hammering head for locking the hammering head against unscrewing and thus holding the rotatable means against rotation.

l0. A lathing hammer comprising in combination a body, a blade, said body and blade having engaging surfaces which prevent the blade from turning with respect to the body, a hammering head detachable from the body, and means connecting the blade and hammering head to the body, said means being rotatably adjustable relatively-to the blade so as to enable proper positioning of the ham-- nic-ring head onY the body.

l1. A lathing hammer comprising in combination a body, a blade, said body and blade having engaging surfaces which prevent the lade from turning with respect to the body, a hammering head detachable from the body, means connecting the blade and hammering head to the body, said means being rotatably adjustable relatively to the blade so as to enable proper'positioning of the hammering head on the body, and means for locking the hammering head against turning relatively to the body.

12. A lathing hammer comprising in combination a body, a blade, said body and blade having engaging surfaces Which prevent the blade from turning With respect to the body, a hammering head detachable from the body, and a bolt connecting the blade and hammering head through the body, one end of the b-olt being threadedly connected to the hammering head and the other end of the bolt having a head engaging the blade.

13. A lathing hammer comprising in combination a body, a blade, said body and blade having engaging surfaces Which prevent the blade from turning With respect to the body,

a hammering head detachable from the body, p

and a bolt connecting the blade and hammering head through the body, one end lof the bolt being threadedly connected to the hammering head and the other end of the bolt having a head rotatably adjustable With respect to the blade so that although the blade may not turn relatively to the body the bolt may be turned enabling the head to assume a proper position with respect to the body.

14. A lathing hammer comprising in combination a body, a blade, said body and blade having engaging surfaces Which prevent the blade from turning With respect to the body, a hammering head detachable from the body, and a bolt connecting the blade and hammering head through the body, one end of the bolt being threadedly connected to the hammering head and the other end of the bolt having a head engaging and rotatable relatively to the blade.

15. A lathing hammer comprising in combination a body, a blade, said body and blade having engaging surfaces which prevent the blade from turning With respect to the body, a hammering head detachable from the body, a bolt connecting the blade and hammering head through the body, one end of the bolt being threadedly connected to the hammering head and the other end of the bolt having a head engaging and rotatable relatively to the blade, and means locking the head against turning relatively to the body.

16. A lathing hammer comprising in combination a body having a groove on one side thereof, a blade receivable in the groove, said blade having an aperture extending transversely therethrough, and means adapted to be positioned in said aperture from one side of the blade for tightening the blade against the body, said blade presenting a concavity adjacent the operture to partially receive said means.

In testimony whereof I have signed my name to this specification.

JOSEPH W. HENNECKE.

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