US552849A - Bush-hammer - Google Patents

Bush-hammer Download PDF

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Publication number
US552849A
US552849A US552849DA US552849A US 552849 A US552849 A US 552849A US 552849D A US552849D A US 552849DA US 552849 A US552849 A US 552849A
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head
plates
bush
hammer
cutters
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/02—Percussive tool bits

Definitions

  • A represents a bush-hammer, of which B is the head, which consists of an oblong block of suitable metal, of the width desired for the cutters (3, and of a thickness a little more than the aggregate thickness of the several cutters when secured in place.
  • D is the hole or aperture in the head to receive the handle, as usual.
  • E are two plates of the width of the head, each having a transverse recess or groove F on one side, having shoulders G, in which re Deads the head is placed, the two plates being placed over the head, as shown, closely fitting the same, the free ends H of the plates extending beyond the cutters C of the number desired, their inner ends resting and bearing against the ends L of the heads.
  • the head on each side at M at each end is cut away back from the end preferably in an inclined direction, as shown, leaving the edge or bcaring-place N for the plates.
  • the head on each side has ribs P, two on each side, which are adapted to .fit in corresponding sockets Q in the plates, and the plates are applied to the head by placing them over the ribs, close down upon the sides of the head, the ribs entering the sockets, which are then riveted on their outer ends on the outside of the plates,they projecting sufiiciently to properly rivet them to the plates.
  • the head makes a firm and solid seat for the cutters, and the plates having the recesses F so that their free ends extend over the ends of the heads, as shown, make the seats for the cutters a short distance from the sides of the head whereby there will be no danger of clipping or breaking the head, and thus the firmness of the seat for the cutters is secured.
  • the plates By having the bearing-line N of the plates on the head back from the ends of the head, the plateshave more or less spring beyond the head without diminishing their hold on the cutters by which, when the bolts are taken out, the cutters can be easily removed from the head when desirous of sharpening them or for other purposes, and as easily put in place again.
  • the securing of the plates to the head by the ribs makes a very firm and secure fastening of the parts together.
  • the ribs can be of any suitable width or thickness and can be more or less in number, the invention not being limited to any particular number.
  • the herein described bush hammer consisting of a head having means for receiving a handle, and beveled 0d at its four corners as at M to form side bearings adjacent to the ends of said head, ribs projecting from the sides of said head securing plates provided with transverse recesses intermediate their ends in which the head is located, sockets in said plates to receive the ribs projecting from said head, a series of cutters arranged and secured between said plates and resting at their rear ends against the ends of the head, substantially as described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Harvester Elements (AREA)
  • Insertion Pins And Rivets (AREA)

Description

(No Model.
G. MAIN.
BUSH HAMMER.
Patented Jan. 7, 1896 MN 5 M g A F 0 H v a H iNOREW .WI'IAH, HOTOWQWASKINGTDNJL UNITED STATES PATENT O -EETCE.
GEORGE MAIN, OF QUINCY, MASSACHUSETTS.
BUSH-HAMMER.
SPECIFICATION forming part of Letters Patent No. 552,849, dated January 7, 1896.
Application filed June 12, 1893. Serial No. 477,368. (No model.)
To aZZ whom it may concern.-
Be it known that I, GEORGE MAIN, of Quincy, in the county of Norfolk and State of Massachusetts, have invented certain new and useful Improvements in Bush-Hammers, of which the following is a full, clear, and exact description.
This invention consists of a bush-hammer constructed and arranged for operation, all substantially as hereinafter described, reference being had to the accompanying sheets of drawings, in which Figure l is a perspective View of a bush hammer constructed in accordance with this invention. Fig. 2 is a longitudinal central section of the same. Fig. 8 is a perspective view of the head.
In the drawings, A represents a bush-hammer, of which B is the head, which consists of an oblong block of suitable metal, of the width desired for the cutters (3, and of a thickness a little more than the aggregate thickness of the several cutters when secured in place.
D is the hole or aperture in the head to receive the handle, as usual.
E are two plates of the width of the head, each having a transverse recess or groove F on one side, having shoulders G, in which re cesses the head is placed, the two plates being placed over the head, as shown, closely fitting the same, the free ends H of the plates extending beyond the cutters C of the number desired, their inner ends resting and bearing against the ends L of the heads.
The head on each side at M at each end is cut away back from the end preferably in an inclined direction, as shown, leaving the edge or bcaring-place N for the plates. The head on each side has ribs P, two on each side, which are adapted to .fit in corresponding sockets Q in the plates, and the plates are applied to the head by placing them over the ribs, close down upon the sides of the head, the ribs entering the sockets, which are then riveted on their outer ends on the outside of the plates,they projecting sufiiciently to properly rivet them to the plates.
The head makes a firm and solid seat for the cutters, and the plates having the recesses F so that their free ends extend over the ends of the heads, as shown, make the seats for the cutters a short distance from the sides of the head whereby there will be no danger of clipping or breaking the head, and thus the firmness of the seat for the cutters is secured.
By having the bearing-line N of the plates on the head back from the ends of the head, the plateshave more or less spring beyond the head without diminishing their hold on the cutters by which, when the bolts are taken out, the cutters can be easily removed from the head when desirous of sharpening them or for other purposes, and as easily put in place again.
The securing of the plates to the head by the ribs makes a very firm and secure fastening of the parts together. The ribs can be of any suitable width or thickness and can be more or less in number, the invention not being limited to any particular number.
Having thus described my invention, what I claim is- The herein described bush hammer consisting of a head having means for receiving a handle, and beveled 0d at its four corners as at M to form side bearings adjacent to the ends of said head, ribs projecting from the sides of said head securing plates provided with transverse recesses intermediate their ends in which the head is located, sockets in said plates to receive the ribs projecting from said head, a series of cutters arranged and secured between said plates and resting at their rear ends against the ends of the head, substantially as described.
In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.
GEORGE MAIN.
\Vitnesscs EDWIN W. BRO'WN, LEONA C. ARNO.
US552849D Bush-hammer Expired - Lifetime US552849A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001081267A2 (en) 2000-04-20 2001-11-01 Aerock, Inc. Prefabricated structural building members using high strength light-weight fiber ash composite material and method of manufacture thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001081267A2 (en) 2000-04-20 2001-11-01 Aerock, Inc. Prefabricated structural building members using high strength light-weight fiber ash composite material and method of manufacture thereof

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