US1854286A - Reversible floor scraper - Google Patents

Description

April 19, 1932. A. w. ABRAHAMSEN REVERSIBLE FLOOR SCRAPER Filed March 6, 1929 18 5 Wfl 1 1 I IIHHIIHHHHHH III I III I... I I12 ing a part Patented Apr. 19, 1932 ALFRED- W. ABRAHAIMSEN, OF QUEENS VILLAGE, NEW YORK REVERSIBLE FLOOR SGRAPER Application filed March 6,

This invention relates to wood scrapers, more particularly to floor scrapers adapted for use on wood and parquet floors, the object of the invention being to provide an improved reversible floor scraper usable for either roughing or finishing work and which 1s slmple in construction, inexpensive to manufacture, and durable in use, the present 1nvention being an improvement upon that shown 1 and described in my Patent No. 1,670,646, of

May 22, 1928, and upon that shown and described in a contemporaneously-pend1ng application, which has issued as Patent No. 1,735,710 of November 12, 1929.

Another object of the invention is the provision of an improved floor scraper having a rotatable or endwise reversible cutter-holding blade whereby it is adapted for both roughing and finishing cuts.

Another object of the invention is the provision of an improved floor scraper having detachable cutters and provided with means for reinforcing the cutters.

Another object of the invention is the provision of a floor scrap-er provided wlth 1mproved means for manipulating the same.

A still further object of the invention 1s the-provision of an improved floor scraper having means for guarding one cutter whlle its companion cutter is in use and whlch guard is also efiective, when shlfted into position, to facilitate the sharpening of the cutters.

In the drawings accompanying and formof this specification Figure 1 is a partly sectional side view of this improved floor scraper;

Fig. 2 is a top view thereof;

I Fig. 3 is a detail, sectional view taken on line 3-3, Fig. 1;

Fig. 4 is a partly sectional, detail view of the cutter-holding blade and a part of the handle assembled; and

Fig. 5 is a detail view illustrating the manner of assembling the cutter guard.

Similar characters of reference indicate corresponding parts in the several views.

Before explaining in detail the present im- 4 provement and mode of operation thereof, I desire to have it understood that the inven- 1929. Serial No. 344,681. 7

tion is not limited to the details of construction and arrangement of parts which are il lustrated in the accompanying drawings, since the invention is capable of other embodiments, and that the phraseology which I employ is for the purpose of description and not of limitation.

The primary object of the present improvement is the provision of'an endwise reversible cutter blade carrying detachable cutters, one adapted for a roughing cut and the other for a finishing out, together with improved means for holding the same and improved means for guarding the cutters, which means is also adapted for use in the 5 sharpening of the cutters.

' In the present improvement the handle 2, formed of any suitable material, preferably wood, extends obliquely from the blade-supporting block hereinafter referred to and terminates in a lower curved portion, and therefore forms what may be designated as a pistol grip, since it is shaped somewhat like the handle of a pistol or a revolver. This handle terminates at its upper or for- 76 ward end in a block-formed blade support-: ing portion 3 located at an obtuse angle to. the oblique handle and is rabbeted at its sides, as at 4, for the reception of a metal U-shaped reinforcing plate or ferrule 5 fitan ting flush within the rabbeted portion of the handle and provided with a tubular projection or collar 6 preferably stamped up therefrom and located centrally thereof for the passage of a screw bolt 7 projecting through the block portion of the handle and above the tubular portion for the reception of athreaded knob 8 of any suitable form by means of which bolt and knob the cutter carrying blade 9 is clamped in position on the handle. Located between the knob 8 and the blade 9 is a suitable clamping disc or washer 10. The blade 9 is provided with a pair of openings 11 and 12, one adjacent to each end, for the reception of a positioning 9i projection or stud 13 likewise preferably stamped up from the plate 5, thereby to properly position the blade. The blade 9 is wider at one end than at the other, and in the present instance each end of the blade has 1 attached thereto, as by spot welding or any other suitable way, a channel-formed member 14 curved in the direction of its length for the reception of a similarly-formed cutter 15, this channel-formed portion 14 and cutter 15 being similar to those shown and described in the patent hereinbefore referred to. In the present improvement, however, the blade has its ends 16 so formed or bent as to overlap the channel or groove-formed cutter holding members 14, thereby to strengthen and reinforce them. By rotating and thereby endwise reversing the blade to bring the narrower end thereof into working position, the scraper may be used for roughing cuts where the chips are heavier and where it would be difficult to make them if the cutter was too wide. This end of the cutter blade therefore has a somewhat greater curvature than the opposite end, in consequence of which the cutter will dig in more and deeper and thus make a more efiicient roughing cut. The wider end of the cutter, when the blade is endwise reversed, is used for making the finishing cut and consequently the curve at the end of the cutter blade is less than that at its opposite end, in consequence of which the cutter will not dig into the wood to any great extent.

In the use of the scraper, the operator grasps the pistol-grip handle, which is used for pulling, and with his other hand also grasps the knob, which is used for pressing, the amount of pressure placed on the knob by the left hand, together with the angle at which the cutter is held, determining the character of the chip to be cut or scraped as heavy, light, or medium.

By providing the U-shaped ferrule 5, the wooden handle is protected and a stronger and more durable scraper is provided while it also facilitates the tight clamping of the cutter-holding blade to the handle. he upstruck tubular member 6 thereof prevents any wear on the holding bolt passing therethrough and the shearing thereof when the scraper is in use.

Since this improved scraper has a rotatable and, therefore endwise reversible blade, enabling both a finishing and a roughing cutter to be carried atthe same time b the same blade and to be alternately used by the mere endwise reversal of the blade, and since the scraper may be used with both of the detachable cutters attached to the blade, we have provided a guard 17 for protecting the hand of the operator when the scraper is in use. This guard comprises a spring metal plate bent to overlap the rear cutter and thus protects the hand of the operator from being accidentally cut by the rear cutter. This plate is shown as of U-shaped form and provided with-inwardly projecting portions 18 extending into a V-shaped slot 19 on the underside of the disc or washer 10, the

spring formation thereof, together with its location in the V-shaped slot of the washer, tending to hold the guard in position and cover the rear cutter. WVhen, however, it is desired to sharpen the forward cutter, this guard may be swung over into the position shown in dotted lines in Fig. 1 or in full lines Fig. 5, and thus reversed whereby it is in proper position to guide the file or other sharpening device which may be used for sharpening the cutter edge, the file thus being given two points of support, one on the cutter edge and the other along the curved edge of the guard, thereby lnsuring the proper sharpening of the cutter in an expeditious manner.

By releasing the knob 8 suflicient-ly to permit the blade to be freed of its positioning stud 13 the blade may be rotated or endwise reversed so as to bring either the roughing or finishing cutter into position for use, and

by entirely removing the knob, the blade, can, of course, be removed.

It is to be understood that by describing in detail herein any particular form, structure or arrangement, it is not intended to limit the invention beyond the terms of the several claims or the requirements of the prior art.

Having thus explained the nature of my said invention and described a way of constructing and using the same although without attempting to set forth all of the forms in which it may be made, or all of the modes of its use, I claim:

1. A floor scraper comprising a handle having an endwise reversible cutter-carrying blade having a cutter at each end thereof, means for positioning the blade on the handle, means for clamping the blade on the handle, said blade having greater width at one end than the other and also having greater curvature at one end than the other, and a swinging guard effective in one position to guard one cutter and in another position to assist in the sharpening of the other cutter.

2. A floor scraper comprising a handle, an endwise reversible cutter-carrying blade and a reversible guard co-operating with the blade and effective in one position to guard the hand against one cutter and in another position to assist in the sharpening of a cutter.

3. A. floor scraper having a handle and a supporting block, a reinforcing plate for said block and provided with a tubular member and a positioning stud, an endwise reversible blade having a pair of positioning openings, means including an auxiliary handle for clamping the blade to the reinforcing plate, said blade having greater width at one end than the other and also having a pair of U- shaped channels, one of greater lengthwise curvature than the other, for the reception of detachable cutters, and also having bent ends overlapping and reinforcing the U- shaped channels, and a swinging reversible hand guard also secured in position by said clamping means for guarding the cutter adjacent to the handle and effective to assist in the sharpening of the cutter located at the forward end of the pistol-grip handle.

4. A floor scraper having a blade provided with a channel-formed member for receiving a cutter and also having the end of blade overlapping and reinforcing said channel member and cutter. V

5. A floor scraper having a blade provided with a channel-formed member at each end for receiving a cutter and also having its ends overlapping and reinforcing said channel and cutter.

6. A floor scraper having a blade provided with a channel-formed member for receiving a cutter and also having its ends bent upwardly and over said channel-formed member for reinforcing said channel and cutter.

7. A floor scraper comprising a horizontally-located supporting block terminating in an obliquely-located handle, a cutter-carrying blade supported flatwise on top of said block and a reversible guard located on top of said blade and effective in one position to assist in sharpening the cutter.

8. A floor scraper comprising a horizontally-located supporting block terminating in an obliquely-located handle, an endwise-reversible blade located fiatWise on top of said block and carrying cutters at the opposite ends thereof, and a reversible guard located on top of said blade and effective in one position to project over the obliquely-located handle and guard the hand against one cutter and in another position to assist in sharpening the cutter. V

9. A floor scraper having a handle and a supporting block, a reinforcing plate for said block and provided with a tubular member and a positioning stud, an endwise reversible blade having a pair of positioning openings, and means including an auxiliary handle for clamping the blade to the reinforcing plate.

10. A floor scraper comprising a handle, a double ended cutter carrying blade and a reversible guard co-operating with the blade and effective in one position to guard the hand against one cutter and effective in the other position to assist in sharpening the other cutter.

Signed at Queens Village, N. Y. this 4th day of March, 1929.

ALFRED W. ABRAHAMSEN.

Images