US1541522A - Machine for surfacing car floors and the like - Google Patents

Description

June 9, 1925.

' w. N. OE HM ET AL MACHINE F95 sgnucms 04;; moons AND THE LIKE 2 S heets-Sheet 1 lnl/ento 73 4 y gv "ACHINE FOR SURFACING CAR FLOORS QND THE LIKE 4 Filed Oct. 51, 1921 ,2 Sheets-Sheet 2 m/mwiw;

} Gomer Powell;

Patented June Q, 1925.

nm'rso STATES PATENTIOFFICE.

WILLIAM N. DE I-1M AND GOMEBT POWELL, OF 'MICHIGAN CITY, INDIANA. I

MACHINE FOR SUB-FACING CAR FLOORS AND THE LIKE.

Applicationfiled October 31, 1921. Serial No. 511,849.

To all whom it may concern: I

Be it known that we, VVITiLIAM N. OEI-IM and Goarnnr POWELL, citizens, respectively, ofthe United States and of the Kingdom of Holland, and residents of MichiganCit-y, county of La Ports, and State of Indiana, have jointly invented certain new and'useful Improvements in Lia-chines for Surfacing Car Floors and the Like, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a .part thereof.

The invention relates to a nailing and surfacing machine adapted especially for driving floor boards into place, and at the same time finishing the driving of the nail wherever such nail has not been previously set by the nailing machines, hand hammer, or other tools. The device is particularly designed for surfacing the floors of freight cars where speed is essential.

,An object of the invention is to provide a mounting for such machine so as to enable the operator to quickly and easily roll the same over such boards as are not completely driven into place. A further object is to provide a set of special design for the hammer which will ride over the uneven floor easily and without catching on any boards (projecting above the surface.

Reference may be had to the accompanying drawings, in which- Fig. 1 is a side view of the nailing and surfacing machine;

Fig. 2 is a top plan view of the same;

Fig. 3 is a front view of the machine; and

Figs. 4 and 5 are detail views of the set designed for use with the machine, the set being shown in side elevation and in plan, respectively.

The machine comprises a pneumatic hammer designated generally by the reference numeral 10, and may be of any desired construction. The hammer is attached to some form of carriage, which in this case is illustrated as a three-wheel vehicle 11, the rear wheel 12 being pivoted in the manner of a caster so as to allow the carriage to be easily turned.

The hammer 10 may be provided with a set 13 of special design, shown in detail in Figs. at and 5. The stem 14 of the set fits loosely in the hammer socket 15, and its head rests upon the floor. The front and rear edges of this set 13 are shown as beveled slightly so as to ride over the uneven floor" easily, without catching on any boards which may be projecting above the surface. Thehammcr is reciprocated rapidly by means of air pressure supplied thereto, as by a pipe 16, connected with any convenient source of pressure by the attachment of a flexible hose 1? at its inlet. The hammer delivers a succession of heavy blows upon the set, and in this manner the floor boards are driven completely down without being marred, as is the case when a sledge hammer is used according to the present practice.

The throttle valve 18 for admitting air to the pneumatic hammer may be operated by a bell-crank l9, fulcrumed at 20 upon a bracket 21, shown as apart of the frame of the carriage. erated' by pushing on handles 22 of the carriage, and manipulating an operating crank 23 with one hand. The crank 23 is attached to the bell-crank 19 by a connecting rod 2 1. As long as the valve 18 is open the air hammer reciprocates rapidly, and as the machine is moved forward the blows are distributed over the several boards which have been previously nailed adjacent to each other.

- It is obvious that a machine of this kind may have other uses than that described. It may also be used for smoothing surfaces other than floors, as, for example, in road making; or for roughening surfaces, by using a chisel-like set in the hammer socket 15 instead of the form illustrated in Figs. 4 and 5. It is, in fact, adapted to all classes of work which require a machine tool delivering heavy blows in rapid succession over surfaces of considerable size.

We claim as our invention 1. A machine for surfacing floors and the like, the combination of a carriage including a frame, longitudinal spaced wheels supporting the frame and one of them being swiveled to turn about a vertical axis, a pneumatic hammer mounted in fixed position on the frame forwardly of the wheels and carrying a set in position to operate on the floor to a level corresponding with the plane of the points supporting the wheels, an operating handle projecting rearwardly from frame, and means operable from the handle for controlling the hammer.

2. A machine for surfacing floors or the like comprising, in combination, a pneumatic hammer, a beveled set therefor loosely The machine may be opmounted in said hammer whereby the same is adapted to ride over the surface of the floor, a carriage on Which said hammer is mounted, an operating handle for said carriage, and Valve-controlling means for said hammer operable from said handle.

8. A machine for surfacing floors or the like con'iprising in combination, a carriage, a pneumatic hammer mounted thereon, and a set loose in said hammer adapted to ride over the surface of the floor.

l. A machine for surfacing floors or the like comprising, in combination, a carriage, a pneumatic hammer mounted thereon, and a beveled set loosely mounted Within the hammer casing and adaptedto ride over the surface of the floor.

5. A surfacing machine comprising, in combination, a carriage, a pneumatically operable reciprocating tool mounted thereon, a casing for said tool having a socket at its lower end, a set loosely fitted in said socket and adapted to deliver blows in rapid succession to the surface to be operated upon.

6. In a machine for surfacing floors and the like, the combination of a carriage including a frame, Wheels on which the frame is mounted, and a handle by which the carriage is directed, a pneumatic hammer carried in fixed positionby said frame and means accessible from the handle for controlling the hammer, said Wheels being arranged to support the hammer constantly in position to reduce elevations to the level of the surface on which they rest.

7 7. In a machine for surfacing fioors'or the like, the combination of a frame, a pneumatic hammer carried by the frame, Wheels on which the hammer is mounted and arranged to support the hammer in a constant relationship to the surface on which the wheels rest, and a beveled set loosely mounted with respect to the hammer and adapted to slide over the floor.

8. In a machine for surfacing floors and the like, the combination of a portable support, a pneumatic hammer fixed in permanent position on said support, and means for supporting said portable support at a predetermined distance from said. fioor whereby the said hammer may be carried in a definite relation to the surface to be treated.

WILLIAM N. OEHM. GOMERT POWELL.

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