US1013025A - Carrier-track. - Google Patents

Description

G. LANE.

CARRIER TRACK.

APPLIOATION FILED JAN. 2v, 1910,

1|.. ML 1M Gym 24 mm DE dw .muur/d H G Tu n@ DL hw. .m

Inventor.'

lian/ev,

G. LANE. CARRIER TRACK.

r APPLICATION FILED JAN. 27, 1910. 1,01 3,025". .Patented Dec. 26, 1911.

2 SHEETS-SHEET 2.

Invenr.'

CDLUMBIA r'LANoGn/WH co.,w/\sHlNGTON. D. c.

UNITED STATES PATENT OFFICE.

GEORGE LANE, 0E EOUGHKEEESIE, NEW YORK, AssIGNoE. To LANE Enos. co., 0E roUGHKEErsIE, NEW YORK.

yCARB/IEla-TRACK.

Specication of Letters Ilatent.

Patented Dec. 26, 1911.

To all whom t may concern:

Be it known that I, GEORGE LANE, citizen of the United States, residing at Poughkeepsie, New York, have invented certain new and useful Improvements in Carrier- Tracks, of which the following is a specitication.

The invention is designed for use with store ladders and the like in which the object supported is to be moved longitudinally of the track, and while I have shown it in connection with a store ladder, I do not limit myself to such use. It is desirable also to provide such a construction of bracket and .track as will leave both the upper and the lower surfaces of the track entirely free, the upper surface being clear for the movement of the carrying wheels thereon, and the lower surface being clear from end to end for the location in close proximity thereto of a stop or anti-jumping device or clamp mounted on the movable frame.

My present invention is designed to meet the requirements above noted, and other requirements as will appear hereinafter, and to provide a simple and effective means for clamping to the brackets the track at any point along the same, and it consists in the features relating to these parts and in the features and combination of elements hereinafter described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a rear view `of a section of a store ladder track embodying my invention, showing the carrier for the store ladder mounted thereon and a portion of said ladder; Fig. 2 is an end view of the parts shown in Fig'. 1; Fig. 3 is a detail view of the track and supporting bracket; Fig. 3a is a transverse sectional view of the splice for uniting two sections of the track; Fig. 4: is a view of a modified form of track and splice; Fig. 5 is a view of a modified form of clamp for a bracket.

In these drawings 1 is the track formed of tubular metal having a slot 2 extending from end to end along its rear side, and 3 are the supporting brackets each having an upright portion or arm 4 for attachment by screws 4to the part to which the track is to be* attached and a horizontal arm 5 extending through the rear slot in the track and having a head in the form of a rectangular piece or plate 6 fixed by riveting or in any other suitablenmanner to the end of the horizontal arm. This head or plate is arranged on edge or vertically and it carries a clamping screw or screws 7 which extend through the slot in the track to be accessible at all times for adjustment. The screws pass through screw threaded openings in the clamping head or plate, and when set in proper position to clamp the track in place their ends bear upon the interior of the wall of the track at a point opposite the slot, and thus force the track into strong clamping contact with the head or plate to hold the track securely thereon. The clamping screws may be of any suitable form, for" instance that shown having thesquare heads. By this construction it will be seen that the supporting bracket may be adjusted to any point along the track and the latter quickly clamped in position thereon, and bothv the upper and lower sides of the track will be left entirely clear for receiving the carrying wheels and the stop or brake respectively, when the invention is used in connection with a device in which a stop or brake is employed such, for instance, as a store ladder. Such a brake or stop is shown generally at 10 consisting of a pivoted lever pivoted at 11 and adapted to be pressed up against the under side of the track by a rod 12 operated by a handle 13 pivoted to a bracket 14, the handle having a notched end 15 by which it may be locked to the rod 12 when the brake or clamp 10 is pressed against the under side of t-he track.

It is desirable in apparatus of this kind to have the bracket extension just back of the track as narrow vertically as possible in order that the groove of the carrying wheel may be of sufficient depth to prevent the wheelsv from becoming dislodged from the track. In my construction the bracket is formed all in one piece, the horizontal portion or arm being integral with` the vertical portion, and the horizontal portion may be as wide as desired for any given thickness of the metal, and thus extend along the slot to give the desired strength to the bracket, and likewise the clamping head may extend along the inside of the rail to secure the desired extension of clamping bearing. By this construction a strong bracket is pro-- vided and one which occupies a limited space vertically as to its horizontal arm, leaving a maximum amount of the track exposed on its upper and lower sides for receiving the carrying wheels, and for contact with the stop or anti-jumping device, or brake. Furthermore, it will be observed that the clamping screws extending back through the same slot with the brackets and being in line with the brackets, do not interfere with the available surface of the track, and a wheel or flange or an under guard or brake that will run clear of the bracket will valso run clear of the clamping screw. In Fig. 4, I show a modified form of track, this being of C-shape instead of circular in cross section, the clamping device, however, being substantially the same as that shown in the form irst described.

In order to splice two rail sections together, I employ a splice 8 consisting of two bars extending lengthwise ofthe track and within the saine, and across the joint betweentwo of the track sections, one of these bars carrying clamp screws 9 passing through openings in the bar and having their ends to bear upon the adjacent bar. These screws vextend out through the slot in the track or are accessible through said slot, and when turned they spread the splice bars apart so that they will press upon the interior of the opposite sides ofy the track or rail to be clamped thereto, and thus hold the adjacent track sections together. Instead of employing two bars, one bar may be used, the clamp screws passing through this bar and bearing with their ends upon the interior wall of the track to throw or clamp the bar against the slotted wall. This form of'splice is shown in Fig. 4L, though it may be used in connection with the form of device first described'.`

I show in Fig. 5 c a modified form of bracket'in which', instead of having a single head. piece secured lto the end of the horizontal` arm of the bracket, I may employ a second plate against vwhich the end of the clamping screw bears, 1so that by turning this screw the' second plate 9 will be forced against? one wall, and the other pla-te which is attached' to the bracket will be borne upon by the `opposite wall of the ytrack to thus secure the bracket and track together.

In Figs. 1, 3a and 5 I show a guide pin at 20 connected rigidly to one of the splice bars 8 andl enteringan openingin the other splice bar by which said bars will be held against longitudinal displacement in relation to each other, but one will be permitted lIonovement laterallv in respect to the other I do not limit myself to the details of construction described, nor to the application of my invention to store ladders. For instance, the track, together with the brackets, clamps and splice, may be used in tracks or hangers designed for use in situations other than with store ladders. It will be clear, of course, that when the screws of the clamps are loosened, the said clamp, together with the brackets, may slip along the track to any desired positions.

I claim as my invention 1. In combination, a hollow track having a slot extending longitudinally thereof, a bracket having a portion in line with the said slot and having a clamping head thereon within the track, and a clamp device extending through the slot and mounted on one of said parts to clamp the head to the interior of the track, by a movement of one in relation to the other substantially as described.

2. In combination, a hollow track having a slot extending longitudinally thereof, a

the said slot, a clamping head thereon wi in the track having a screw-threaded perforation, and a clamp screw passed through the slot and head to clamp the head to the interior of the track, substantially as described. V

3. In combination, 'track sections having each a slot extending longitudinally thereof, splice means extending across the joint from bracket having a portion extending through one section to the other and within the same,

veach a slot extendinglongitudinally thereof,

a splice bar extending from one section to the other, and clamp screws in line with the slot and engaging thesplice bar to clamp the same to the interior of the track sections, substantially asl described.

5.V In combination, a track section havinga longitudinal slot, a bracket passing through the said slot and having a head on its inner end, and a clamp screw passing through the said head in line with the slot and bearing uponV the opposite interior wall of the track to clamp the bracket in place, substantially as described.

6. In combination, a plurality of track sections of hollow form, each having a longitudinal slot, a splice bar extending across the joint between the sections, and clamp screws in line with the slot and passing through the splice bar and bearing upon the opposite interior wall of the track to clamp thetsplice bar in place, substantially as de scribed.

7. In combination a track haVing a longiclamping head to clamp the bracket and tudinal slot, a bracket of fiat metal having track together, substantially as described. 10

an arm with its Width extending in a hori- In testimony whereof, I aiX my signa- Zontal plane and passing through the said ture in presence of two Witnesses.

slot and having a head on its inner end, and GEORGE LANE.

a clamping device in the saine horizontal Witnesses:

plane as the fiat metal arm in line With the F. EUGENE DAVIS,

slot, and engaging and coacting with the JOHN M. JANES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. C.

Images