US2377150A

US2377150A - Device for securing tool heads on handles

Info

Publication number: US2377150A
Application number: US504615A
Authority: US
Inventors: Alfred E Hindle
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-10-01
Filing date: 1943-10-01
Publication date: 1945-05-29
Anticipated expiration: 1962-05-29

Description

May 29, 1945. A. E. HINDLE 2,377,150

DEVICE FOR SECURING TOOL HEADS ON HANDLES Filed 001;. 1, 1943 Six/0mm fl lfredECHindZe,

Patented May 29, 1945 OFFICE DEVICE FOR SECURING ON HANDL [1 TOOL HEADS ES Alfred E. Hindle, Wickenburg, Arll.

Application October 1, 1943 Serial No. 504,615

2 Claims. (Cl. 306-35) The object of my invention isto provide an improved device for securing a hammer or other tool head on a handle by means which will pre vent its coming off or working loose and which will leave no obstruction for catching in the clothing or other article when the tool is in use.

It is a special object of my invention to provide a device which will prevent the tool head from working loose under constant use and which will prevent any side motion or end motion of the head relative to the handle.

It is also my object to provide a device which will hold the hammer or other tool head secure to the handle even where it is in use in temperatures of 130 to 135 degrees.

I attain the objects of my invention by the the device illustrated in the accompanying drawing, in which- 2-4 of F18. 1;

Fig. 3 is a section taken longitudinally through the tool head and transversely of the handle on line 33 of Figure 1;

Fig. 4 is a detail side elevation of the handle before the tool head is applied;

Fig. 5 is a transverse section through the handle on line 5-5 of Fig. 4; and

Fig. 6 is a perspective view of one of the metal plates that secure the tool head to the handle.

Like numerals designate like parts ,in each of the several views.

Referring to the accompanying drawing l designates a tool head such as a hammer head shown which is mounted on the handle 2. The tool head i has opposite recesses 3 in the end of the head. I provide opposite rectangular metal plates 4 each of which has a central slot Ii. The plates 4 seat in correspondingly shaped recesses 8 in the opposite sides of the handle. The wooden handle has rectangular wooden keys which are left an integral part of the wood handle in the center of recess cut for the metal plates to seat in the slots 5 of metal plates 4. said ends 8 seating in the opposite recesses 3 of the end of the tool head.

' In applying the tool, the metal slotted plates 4 are fitted over the wooden keys which are an integral part of the wood handle, into the recesses 6 which surround the wooden key. Then the tool head i is applied and then the projecting ends 8 of the metal plate are bent outwardly, as shown in Fig. 2 to align evenly with the outer end of the tool head.

tangular slots 5 of the metal plates 4, side or end movement of the head is effectively prevented.

This tool head may be successfully used in temperatures of 130 to 135 degrees without the tool head coming loose, as expansion and con traction are taken care of at all times.

The fibres of the wood in the main section of the handle are not broken nor deformed, which lendsstrength and long life to the handle and prevents injury due to flying tool heads. In order to secure necessary strength and prevent shrinkage, the metal plates in width should be preferably 60 per cent of the length of the eye in the tool head. Note that metal plates are .installed to provide proper balance to the tool when in use, which is most important; and are installed on the sides of the eye of the tool head where width and strength are provided for metal plates, and by so doing overcome stress and strain on said metal plates. The residing force on a tool head is at right angles to the length of the tool and perpendicular to the plane of the face of the tool head. In my invention the force is still applied on solid wood. It does not throw any tension on any metal plates which might tend to flatten or'deform them.

.What I claim is:

1. The combination of a handle for hammers, hatchets, sledges, axes, and like tools, having recesses on opposite sides containing two longitudinal wood keys which are left as integral parts of the wood handle when the aforesaid recesses are cut, like oppositely disposed metal plates fitting into the recesses, each plate containing a longitudinal slot to fit the wood keys of said handle, the metal plates having projecting ends bent into recesses in the tool head to lock the head in place on the handle and prevent its becoming loose, and whereby there are no projecting ends to catch into objects.

2. The combination of a tool handle having recesses on opposite sides of the enlarged head of the handle, the handle having opposite longitudinal keys integral with the handle and surrounded by said recesses, metal plates shaped to seat in said recesses and having longitudinal slots to receive the aforesaid keys of the handle, the metal plates having projecting ends, recesses in the end of the handle into which the aforesaid projecting ends of the metal plates may be bent and seated to lock the head from becoming loose and to prevent any projecting element beyond the end of the handle while securing the tool head to the handle.

ALFRED E. HINDLE.