US909406A - Floor-scraper. - Google Patents

Description

J. L. HEARING.

FLR SRAPER.

APPLG-ATIQN FILED APK/4,1908.

909,406. Patented Jan. 12. 1909.

2 SHEETS-SHEET J. L. HEARING.

FLGE SUEAPER.

APPMUATMN FILED APP..4, wus.

Patented Jan, 12, 1909.

2 SHEETSF-SHBET 2.

a 11 ue A {'o t .ZW/M5L Keuring means for adjusting the angular relation of yield to pressure on the forward. part of the 'diameter as the shank, wh

JAMES L. HEARING, F COLUMBUS, OHIO.

FLOOR-SGRAPEIR.

No. sconce.

Specification of Letters Patent.

`Patented. Jan. 12, 1909.

Application filed April 4. 190B. Serial No. 426,184.

To all twhom it may concern:

Bc it known that I, JAMns LEROY HEAR- .irrc, a citizen of the United States. residing at Columbus. in the county of Franklin and Stute of Ohio, have invented a certain new' and useful Improvement in Floor-Scrapers, of which the following is a specification.

The particular object of this invention is to provide an improved device for scraping or dressinor wooden floors to remove rough places or otld polishings preparatory to sandpaper-ing and polishing or repolishing them.

The invention is embodied in the construe tion herein shown and described and then articularly pointed out in the claims, thet invention not being confined in its embodi-` ment to the particular instaure of it herein exemplified.

In the accompanying drawings-Fi ure 1 is a side view with parts in section ant parts broken out; Fie. .2 is an elevation of the for-y ward end of the. device; Fig. 3' is a detail illustrating the means for preventing the threaded tool shank from turning in its holder; Fig. 4 is a sectional detail illustrating the means for pivotingrl the tool holder; Fig. 5 is a sectional detail illustrating the the scraping blade to the tool shank.

In the views 6 designates the main frame. The forward portion of the frame is su 4 ported by a` pair of wheels 7, 7 preferab y rubber-tired. These wheels 7, 7 are journaled on stud spindles 8, 8 of a U-shaped axle 8. Projecting upward from the axle 8 are two stout pins 9, 9 that extend through holes in the forward part of the main frame.

10, 10 are stout coiled springs around the pins 9, 9 and between the axle and th'e main frame. The pins 9, 9 and therefore the axleare held from dropping out by means of fastening pins 11, 11. The springs 10, 10

frame.

The rear portion of the main frame is supported by a single wheel ory roller 12. This roller has a round shank 12'L on which is pinned a collar 12"' and the frame is suitably bored to receive said shank. The upper part of said boring is of the same 1 e the lower part is enlarged forming a socket 13 to receive a. coil spring 14 that encircles the shank between the collar 12b and the upper end of the socket. The shank 12*l is secured irelaoe by means of a keeper plate 15 perfora for l the passage of the shank and for screws 15'L to secure it to the under side of the frame. The shank and roller thus have a swiveled connection with the frame but the frame can be depressed on the shank.

16 designates the tool holder. This holder consists of a tube oscillatorily supported in the frame between the front and rear wheels on stud bearings 17, 17 turned on the ends of screw bolts 17"2 17, said bolts being threaded into holes 1n opposite sides of that portion of the frame through which the holder extends.

18 designates the scraper blade. IThis blade as shown consists of a rectangular piece of sheet steel so thatI two opposite edges can be used. The blade is secured by means of a thumb-screw 19 to a base Q0 that. is pivoted at 21 to the shank 22.* A piece of rubber 23 can be interposed between the blade andthe base if desired. V.

24 is a thumbscrew threaded through the shank and swiveled in the base for adjusting the an lar relation of the blade to the shank. T e shank 22 is threaded, as seen at 0 22, and extends up through the holder tube 16. To keep the shank 22 from turning in the holder it is rovided with a. lateral pin 22b (see Fig. 3) t at projects into a slot 16" in the tube. The slot 16` permits adjustment up or down of the scraper shank in its holder. The sera er shank 1s held in the position to which it 1s adjusted by means of nuts 25 and 26 threaded tightly on the shank above and below the tube; but interposed between the lower nuts 25 are washers 27 and 28 between which is held the forwardend of a leaf spring 29 the rear end of which works against the lower side of the main frame. The scraper is shown to be set at an incline to the direction in which the machine is to be moved.-

30 designates a handle for operating the device. This can be secured b v suitable means on any of several holes 31 in a brace on the back of the frame and to a rod 32 hinged to a tin on the tail of the frame, said rod being provided with small holes 32". The holes 31 and 32* permit a large range of adjustment of the handle.

In practice, as is usual with door scra ers of this general type, the device is pus ed forward to perform the scraping operation. But it will be observed first, that in my'rnachinethe frame yields to ressure at both the front and rear, second,t at the scraping tool is intermediate these yielding oints, and third that the scraper yields bac ward so that the action of the scraper is very much like that given a scraper in the human hands. The scraping action of the tool can be made heavy or light at the will of the operator; and hard places do not endanger the tool because it has a yielding action rearward independent of the pressure applied by the operator.

What I claim and desire to secure by Letters Patent is:

1. In a floor scraper. the combination of the main frame, and forward and rear supporting means for the same, a holder 16 vpivoted in said frame between said supporting means to oscillate in a vertical plane, a threaded tool-receiving shank adjustable on said holder, and nuts on said shank for retaining the same in adjusted position in said holder.

2. In a floor scraper, the combination of the main frame, and `forward and rear supporting means for the same, a holder 16 pivoted in said frame between said supporting means to oscillate in a vertical plane, a threaded tool-receiving shank adjustable in Said holder, nuts on said shank for retaining the same in adjusted position, and means to i prevent the turning of said threaded shank.

3. In a floor scraper, the combination of the main frame, means for supporting said frame at its forward and rear ends, a holder ivoted in said frame between said supportmg means to oscillate in a vertical plane, a tool-receiving member movable up and down in said holder, means for securing the same in adjusted position, and a spring tending to press thetool-receiving portion of the tool-receiving member toward the forward 40 end of the main frame.

4i. In a floor scraper, the combination of the main frame, means for supnortin said frame at its forward and rear ends, a older pivoted in said4 frame between said supports to oscillate in a vertical plane, a toollreceivin member movable up and down in said ho der, means for securlng the same in adjusted position, and a spring tending to press the tool-receiving portion of the toolreceiving member toward the forward end of the main frame, themeans for securing the tool receiving member bein'g'also adapted for securing in position one endof said spring.

5. In a door scraper, the combination of the main frame, means for yieioingly supporting said frame at its forward and rear ends, a scraping tool pivoted in said frame between said sunportlng means to oscillate in a vertical plane, and a springr tending to press the scraping tool toward the forward end of the machine.

G. In a ioor scraper, the combination of Ithe main frame, means for yieldingly Supl porting said frame at its forward and rear ends, a holder pivoted in said frame between said su ports to oscillate in a vertical plane, u toolsaid holder, and a spring tending to press the lower end of the tool-holding member toward the forward portion of the main frame.

JAMES L. HEARING.

fitnessesz BENJ. FINCKEL, OSCAR C. HEARING.

oldiug member ad]ustable in

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