US872903A

US872903A - Adjustable tool-holder.

Info

Publication number: US872903A
Application number: US37291207A
Authority: US
Inventors: Patrick F Connelly
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-05-10
Filing date: 1907-05-10
Publication date: 1907-12-03
Anticipated expiration: 1924-12-03

Description

I PATENTED DEC. 3

PiF. CONNBLLY. ADJUSTABLE TOOL HOLDER. APPLICATION FILED MAY 10, 1907.

W) T/VESSES F A TTOR/VE Y3 UNITED STATES PATENT OFFICE.

ADJUSTABLE TOOL-HOLDER.

Specification of Letters Patent.

Patented Dec. 3, 1907.

Application filed May 10 1907. Serial No. 372.912.

T 0 all whom it may concern:

Be it known that I, PATRICK F. OoNNELLY, a citizen of the United States, residing at Sioux Falls, in the county of Minnehaha and State of South Dakota, have invented a new and useful Adjustable Tool-Holder, of which the following is a specification.

This invention relates to an adjustable handle for trowels and other tools used for laying side-walks, floors walls etc., of cement and like materials; and is an improvement on the subject matter of a patent granted to the present applicant on January 29, 1907 and numbered 842,770.

The object of the invention is to provide a handle on which any tool of the type described may be quickly and securely fastened at any horizontal angle and means for readily adjusting the handle to any vertical angle with respect to the working face of the tool. WVith a handle of suitable length attached to the tool by these two means of adjustment, the work accomplished in a given time will be greater, more perfectly done and with less fatigue and exertion in cramped and uncomfortable positions on the part of the workmen than by the ordinary method.

To this end the invention comprises certain novel construction, combination and arrangement of parts hereinafter described and definitely claimed.

In the accompanying drawings :Figure 1 is a perspective view of the adjustable handle attached to a flat smoothing and finishing trowel. Fi 2 is a vertical cross sectional view through the center of the trowel and its adjusting means. Fig. 3 is a horizontal sectional view on the line 33 of Fig. 2. Fig. 4 is a perspective view of a blade for edge finishing. Fig. 5 is a similar view of a jointer blade, and Fig. 6 is a perspective view of an ordinary pointing trowel adapted for use on the adjustable handle.

Similar numerals of reference indicate the same parts on all the figures.

Referring particularly to Figs. 1, 2 and 3, the numeral 1 indicates a trowel blade of rectangular shape for smoothing and finishing surfaces, the length of which is about five times its width.

The trowel ismade preferably of thin steel, smooth on its under side and having a central longitudinal rib or brace 2, extending approximately from end to end, on its upper side and secured thereto by rivets,

screws or other suitable means. The rib 2 is flat on its under side and curved transversely above except at its longitudinal center 3 where it is flattened to afford a smooth bearing surface for the attaching head 4 of the handle. Rising vertically from the flattened portion 3 is a pin 5 threaded at 6 as shown.

The attaching head 4 comprises a tubular vertical socket 7 and a semicircular projection 8 the axis of which is horizontal. Within the socket 7 is a rotatable stem 9 bored out and threaded at its lower end for engaging the threaded pin 5 on the trowel. The upper end of the stem 9 reaches to the top of the socket 7 of the attaching head, where a hand wheel 10 is attached to the stem for rotating it. At any convenient distance between the ends of the socket 7 is a threaded hole for a screw 11, the inner end of which screw engages a groove 12, formed in the stem 9, to prevent end movement of the stem, but permit indefinite rotation. The bottom 13 of the socket 7 is made smooth and perpendicular to its axis, so that when in place it will bear equally on the surface 3 of the rib 2.

The tool is quickly attached to the head socket 7 by slipping the pin 5 of the tool, into the opening 14 in the head socket and then turning the hand wheel 10. The thread 6 of the pin will immediately be engaged by the threaded opening in the stem 9 and drawn up until the surface 3 and the bottom 13 of the socket 7 bear tightly against each other. The trowel may be set at any horizontal angle prior to tightening the screw.

The handle 15 may be of any desired length, to opposite sides of which at its lower end are two plates 16 fastened to the handle and to each other by through rivets 17. The free end of each plate 16,terminates in a disk 18 through the center of said disks are formed holes, one being square the other round and corresponding in diameter with a hole 19 in the semi-circular projection 8 on the attaching head 4. Through the holes in the disks and the hole 19 in the projection 4 is placed a headed bolt 20, provided with a square portion 21 between the head 22 to fit into the square opening in the disk, the remainder of the bolt 20 is round and extends through the projection 4 and the other disk 18. A butterfly nut 23 threaded on the bolt 20, when turned to the right clamps the disks 18 to the semicircular projection 4 and holds the handle 15 in whatever position it had been placed.

From the above it will be observed that before tightening the screw pin on the trowel, it is to be set at the proper horizontal angle to the handle, and before finally tightening the thumb nut 23, the vertical angle of the handle with respect to the face of the trowel will be fixed.

An edging blade 24 or a jointer-blade 25, see Figs. 4 and 5, may be attached to the stem 9 in a manner similar to the trowel 1, as each of the aforesaid. blades has an upright threaded pin 5 similar in all respects to the one fixed to the trowel. In addition to the edging blade and jointer-blade, an ordinary pointing trowel 26, witha straight threaded pin 27 extending from the rear of the blade, can also be fitted to the stem 5. (See Fig. 6.) Any one of these several blades may be attached to the handle and then adjusted as described to suit the position of the person using it, whether he be sitting, kneeling, or standing on a level with the surface under treatment or above or below said surface.

A removable handle adapted to fit the pins on all the blades, such as is represented in Fig. 4., will be found convenient.

I claim 1. An adjustable tool holder comprising a socket having a side projection integrally formed thereon, a stem in said socket ada ted to rotate therein and having a threa ed axial opening in its lower end to engage a threaded projection on a tool, means for preventing endwise movement of said stem, a handle pivoted to said projection and means for clamping said handle to said projection.

2. An adjustable tool holder comprising a socket having an integral projection on one side, a'movable handle, a pivot bolt for said handle extending through said projection and means on said bolt for fastening the parts against movement, a rotatable stem within said socket and having a threaded axial opening in its lower end, a handwheel on the upper end of said stem for rotating it and means for preventing endwise movement of said stem, combined with a tool having a threaded projection adapted to enter the threaded opening in the stem and be clamped against said socket.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

PATRICK F. CONNELLY.

Witnesses:

JOHN C. BRANDT, THos. W. SExToN.