US347436A - Daniel eoy mclaeen - Google Patents

Description

(No Model.)

' D. R. MQLAREN.

SLED.

Patented Aug. 17, 1886.

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UNITED STATES PATENT OFFICE.

DANIEL ROY MOLAREN, or HINOKLEY, MINNESOTA.

SLED.

SPECIFICATION forming part of Letters Patent No. 347,436, dated August 17, 1886.

Application filed May 5, 1886. Serial No. 201,238. (No model.)

To all whom it may concern:

Be it known that I, DANIEL BOY MOLAREN, a citizen of the United States, residing at Hinckley, in the county of Pine and State of Minnesota, have invented certain new and useful Improvements-in Logging-Sleds, of which the following is a specification.

This invention relates to sleighs, more particularly to that class of sleighs employed in hauling heavy logs or timber and other similar material; and it consists in the manner of constructing and arranging the knees and supports for the bolster-beams, as hereinafter set forth.

In the drawings, Figurel is a side elevation, Fig. 2 is a plan view, and Fig. 3 is a rear elevation, of a sleigh-runner and aportion of one of the bolster-beams and bolsters with my improvements attached thereto. Fig. 4. is a cross-sectional elevation on the line as a: of Fig. 1. Fig. 5 is a detached perspective view of the main base-frame, which is attached to the runner. Fig. 6 is a detached perspectiveview of the cap or ferrule of the bolster-beam with a section broken out to illustrate the manner of connecting it with the main runner-frame. Fig. 7 is a detached perspective view of the coupling-pin.

This invention may be applied to nearly all forms of sleighs used for hauling heavy material, such as logs, timber, 850., but is more particularly applicable to logging-sleds used in hauling logs in timber districts.

In the drawings I have shown one runner and a portion of one end of the bolster-beam and bolster of one of these loggingsleds with my improvements attached thereto, which is sufficient toillustrate the invention.

A represents the runner,which is formed in the usual manner, with the shoe A attached to its lower surface.

B represents a frame or cap-plate, resting upon top of the. runner A, and embracing it on both sides and secured thereto by bolts or rivets a. Rising from the upper side of this frame B are two flat brace-plates, B B the adjacent edges, d, ofthe plates being rounded and. larger than the main bodies of the plates, as shown. The main bodies of the plates 13 13 are mere extensions or supporting webs 0r braces to the circular parts 01; but at the same time the upper edges, d of the plates serve as supports and carriers to the bolsters when the latter are swinging around at an angle to the bolster-beams when the sleds are turning curves or corners, as hereinafter more fully explained.

0 represents the wooden bolster-beam, only one end being shown, but which connects two of the runners A together, and is of the ordinary construction.

0 represents aportion of the wooden bolster, which is pivoted to the center of the bolster-beam C in the ordinary manner, and whose ends extend over the frame B and webs B B as shown.

Surrounding the ends of the bolster-beam O are metal ferrules 01' caps D, secured to the bolsters by bolts 6 or set-screws, rivets, or other means, as shown. The sides of these ferrules D are formed with channels h, adapted to embrace the parts d of the plates B B when the ferrules are set down between them, as shown in Fig. 2, the channels hbeing larger than the parts d, so that the frame B and runners A will be free to play slightly around the ferrules and bolster-beam when running over uneven ground. The channels h are curved slightly, as shown in Figs. 3 and 4, so that they are smaller at the centers of the ferrules than at their tops and bottoms, this curving insuring additional strength to the ferrules, while at the same time not interfer-' ing with the free movement of the ferrules on the frame B, but on the contrary rather improving the movement by causing the ferrules to work upon the parts 11 with a rolling motion and without rattling or noise.

Each of the frames B and its plates B B will be formed in one single piece of malleable iron, and each of the ferrules D will also be formed in one single piece of malleable iron, thus combining great strength with lightness and cheapness.

I claim a greatadvantage by forming the joint between the ferrules D and web B B so that a certain degree of free play exists between them, as the runners are thus free to adapt themselves to the uneven surface of the ground without cramping or straining the parts. The upper side of the cap-plate B be tween the standards (1, or the lower side of the ferrule D, will also be slightly convex, as shown in Figs. 4 and 5, so that the runner and its attached cap-plate will have a rolling motion beneath the ferrule and bolster-beam at right angles thereto, whereby the friction is greatly reduced and nullified. Another point to be noted is, that thebearing-surfaces are all of metal, so that all the friction is borne by metal against metal; hence the wooden parts A and G are not subjected to any wear.

The inner lower edges of the ferrules D are formed inclining downward and inward, as shown at D and the ends of the bolster-beams G are formed-with inclinations g, to conform to this incline D' of the ferrules, the inclinations g serving to prevent the bolster-beams from being forced inward through the ferrules, or the ferrules from being driven inward upon the bolster-beams. These inclined parts D" of the ferrules D also serve to assist in the support of the ferrules on the frame B by hearing a portion of the end-thrust of the bolster-beams, and thus prevent the strains from all coming upon the plates B B.

Formed through the centers of each of the frames B, midway between the plates B B is a slot, 1', and a cavity, 3 (see Fig. 4,) will be formed in the top of each runner A beneath the slot t". A similar slot, will be formed through the bottoms of each of the ferrules D,

corresponding with the slots i, and in line therewith when the ferrules are in position on the plates B. In the edges of the slots i are formed small notches or cavities 3, (see Fig. 6,) adapted to receive the sides of the square head ofa bolt, 15 (See Figs. 4 and 7.) This bolt i has a cross-bar, i, on its lower end,adapted to be inserted down through the two slots, t" i into the cavity 5", and then turned at right angles to the runner A, and the head i dropped down into the notches a". The ends of the cross-bar t" thus project beneath the sides of the slot t" in the frame B and prevent the bolt 2' being lifted upward, while the head i by fitting into the notches 2", prevents the bolt 1' from turning around in the slots. By this means the ferrule D is locked to the frame A, and when the bolster beam 0 is inserted into the ferrule D the bolt 2' will be held thereby down into place, and by no possible chance can the bolster-beam and runner be accidentally separatcd.

The upward strains of the ferrules are very slight, only occurring when the sleds are empty and being lifted from place to place; hence any one of the bolts 11 will never have to be subjected to a strain greater than the weight of one of the runners A and its frame B.

\Vhen turning curves and corners the bolster-bcams of course swing around at'an angle to the bolster, with the ends of the latter projecting out over the upper sides, d of the webs B B and when heavy loads are being carried on the sleds the tendency is for the ends of the bolsters to drop downward when running over uneven ground; hence it will be readily seen that under these circumstances the webs B B, with their extended upper edges, d", perform a very important function in receiving and supporting the ends of the bolsters and preventing the loads from overturning.

Small projecting wings or webs may be formed upon the sides of the webs B B, to strengthen and support them.

The cap-plates B, by projecting down over the upper edges of the runners, serve to strengthen and protect them from abrasion from the loads upon the sleds.

Having thus described my invention, what I claim as new is- 1. In a sleigh, the runners A, cap-plates B, embracing the upper edges of said runners and having brace-webs B B provided with circular adjacent sides d and flat upper edges, d and all formed in one piece, ferrules D, having channels h, with curved sides, all formed in one piece and adapted to be inserted between said webs B B, said ferrules supporting and encompassing the ends of the bolsterbeams C, substantially as set forth.

2. In a sleigh, the runners A, cap-plates B, embracing the upper edges of said runners, and having brace-webs B B, provided with circular adjacent sides (1 and flat upper edges, (1 and all formed in one piece, ferrules D, having channels it, with curved sides and downwardly-inclining end D all formed in one piece and adapted to be inserted between said webs B" B, and ferrules D supporting and encompassing the ends of I the bolster-beams 0, whose outer ends are inclined atg to fit said inclined ends D, substantially as set forth.

3. In a sleigh, the combination of the capplate B, adapted to be attached to the upper edge of the runners A and provided with webs B B and slot 6, ferrule D, encompassing the ends of the bolster-beams G, and having channels h, and adapted to be inserted between said webs B B, and provided with notched slot 5", corresponding to said slot t", and a bolt, i, having head and cross-foot i, and adapted to be inserted into said slots i i, to lock said ferrule and cap-plate together, substantially as set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

DANIEL ROY MQLAREN.

Vitnesses:

FRANK P. BLAIR, H. S. WEBs'rnR.

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