US1335848A - Spade - Google Patents

Description

c.- E. MILLER.

SPADE.

APPLICATIQN. HLED JAN- 25, 19,18-

Patented Ame, 1920.

FIGJ.

iliilillliil WITNESSES R O N E V.

UNITED STATES PATENT OFFICE.

CHARLES E. MILLER, 0F PITTSBURGH, PENNSYLVANIA.

SPADE.

Application filed January 25, 1918.

To all whom it may concern:

Be it known that I, CHARLES E. MILLER, a citizen of the United States, and a resident of Pittsburgh, in the county-of Allegheny and State of Pennsylvania, have made a new and useful Invention in Spades, of which the following is a specification.

This invention relates to the manufacture of spades or similar articles in which one piece is formed with integral tenons to which another piece is riveted.

In the manufacture of spades it is now customary to provide the top of the blade thereof with a finishing strip which serves as a step or foot rest. The blade of the spade is provided with a handle socket consisting of curved front and back straps one of which is generally struck up from the metal of the blade and the other of which is usuall welded to the blade. Between these or wit in the socket formed by the same the handle of wood is secured. The handles vary in diameter and the handle socket does not always happen to be centrally located and as the foot rests or step pieces are riveted to the blade one on each side of the handle and then driven into the handle at their inner ends it has been customary to make up these foot rests or step pieces in different lengths or to punch the tenon receiving holes at difierent points in the length of the step pieces to accommodate handles of different diameters and those off center. This practice has required more or less fitting and the carrying in stock of the different length step pieces.

The object of this invention is to provide means whereby uniform step pieces may be used which will automatically adjust or accommodate themselves to handles of varying diameters.

This as well as other objects I attain by means of the construction described in the specification and illustrated in the drawings accompanying the same and forming a part of this application.

In the drawings, Figure 1 is a view in elevation of a spade embodying this invention; Fig. 2 is a top view partially in plan and partially in section of a spade embodying this invention; Fig. 3 is a view showing a portion of the blade in .elevation with the step pieces and handle shown in section and Fig. 4 is a fragmentary view showing a portion of the blade and step piece and the riveted tenon in section.

Specification of Letters Patent.

Patented Apr. 6, 1920.

Serial No. 213,807.

In carrying out this invention the wood handle 5 is inserted within the socket formed by the curved metal members 6 and 7 secured to or struck up from the material of blade 8. The handle is secured within the socket in any suitable manner and the blade is formed with integral tenons 9 and 10 proecting from the top edge thereof. Step pieces 11 and 12 are provided and these have their inner ends flared as at 13 and formed with three points 14, 15 and 16 the outer end of each step piece is punched to provide a tenon slot 17 having serrated or roughened sides 18, 18 The tenon slots are made materially longer than the tenons so as to provide adjustment between the tenons and the slots, Each step piece between its pointed end and a point adjacent the rivet slot is upwardly curved as shown in Fig. 3 so as to shorten the over all length of the step piece.

In assembling the step pieces they are placed over the tenons so that the end of point 16 contacts with the wood handle exposed between the socket pieces 6 and 7 The tenon is then riveted over so as to secure the step piece in place and the step is then flattened as shown at the right of Fig. 3. This process drives point 16 into the wood handle and at the same time points 14 and 15 are caused to straddle the socket members 6 and 7 as shown at the right of Fig. 2.

It will be seen that in this manner I provide what may be termed an adjustable tenon or rivet slot and from the formation of the slot that is the roughened or serrated sides thereof it will be seen that the step will be rigidly held in place at one end by the rivet and at the other end by the handle and the socket members 6 and 7 It will be understood that this invention is applicable to other articles of manufacture in which itisdesired to secure two pieces or members together by means of a riveted tenon formed integral with one of the members.

Having thus described my invention what side walls, of a member having an integral tenon adapted to move freely between opposed serrations in said slot and to have its sides extruded to engage said serrations.

3. The combination with a spade blade having a tenon formed integral therewith, of a step piece having a tenon slot of relatively great length with relation to said tenon and provided with roughened side walls.

4. The combination with a spade blade having a tenon formed integral therewith, of a step piece having a tenon slot of relatively great length with relation to said tenon and provided with toothed side walls engaging the sides of said tenon to prevent longitudinal movement of said step piece.

In a spade, a blade provided with integral tenons and a handle socket, a handle within said socket, step members each provided with an end formed to pierce said handle and with an end having a tenon slot of relatively great length with relation to said tenon and provided with roughened side walls receiving extended portions of said tenon.

6. In a spade, a blade provided with integral tenons and a handle socket, a handle within said socket, step members each provided with an end formed to pierce said handle and with an end having a tenon slot of relatively great length with relation to said tenon and provided with toothed side walls engaging. teeth formed in said tenon of said step and blade may be obtained and means for maintaining desired adjustment by extruding the sides of said tenon to engage said toothed mortise.

8. In a spade, a blade provided with inte-gral tenons and a handle socket, a handle within said socket, step members being relatively adjustable with said blade and handle and provided with a mortise for said tenons and means for maintaining adjustment between said step member and said blade and handle comprisingserrations in sides of said mortise and engaging serrations in said tenon formed after adjustment of said tenon and mortise.

In testimony whereof, I have hereunto subscribed my name this ninth day of January, 1918.

CHARLES E. MILLER.

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