US746816A

US746816A - Dry-kiln truck.

Info

Publication number: US746816A
Application number: US12225802A
Authority: US
Inventors: Charles Alcott Goddard
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-09-05
Filing date: 1902-09-05
Publication date: 1903-12-15
Anticipated expiration: 1920-12-15

Description

` No. 746,816. PATBNTEDDEG. 15,` 1903.

A DRY KILN TRUCK.

APPLIUATION EILED SEPT. 5, 1902.

N0 MODEL.

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unllllh. IIIIIIIUZIIIIHIUI la O. 746,8 1 6.

UNITED STATES Patented ecmber 15,1903

PATENT OFFICE.

D RYJKILN TaupcK.

SPECIFICATION forming part of Letters Patent No. 746,816, dated December 15, 1903. Application mea september 5. 190s. serial No. 122,258. et man.)

To all whom/it may 'con/cern:

Be it knownvthat'LCHARLEs ALcoT'r Gon- DARD, a citizen of the United States of America, and a resident of theei-ty of Seattle, in the countyof King and State of Washington, have invented certain new and useful Improve-y ments in Dry-Kiln Trucks, Cof `which the following is a specifieati'om My invention relates to improvements in lumber-trncks,'and has special reference to a device of this kind especially useful in lumber dry-kilns. v

Among numerous objects obtained by this invention and readily understood; from the following specication and accompanying drawings,included as a part thereof, is the production of a simple and inexpensive lumbertruck especially adapted for use in dry-kilns and embodying essential features of Vdurability, general eiciency, and adjustability, which prolonge its usefulness, renders the truck of light weight, easy to operate, and reduces to a minimum the liability of breakage.

The above-mentioned objects are attained by the construction, combination, and arrangement of parts as disclosed on the drawings set forth in the specification, and succinctly pointed out in the appended claims.

With reference to the drawings filed herewith and bearing iike reference characters for corresponding parts throughout, Figure 1 is a vertical transverse section of the truck, taken on line 1 1 of Fig. 2 and viewed as the arrows indicate. Fig. 2 is a vertical longitudinal section of one of the chairs or separations, taken on line 2 2 of Fig. 1 viewed as the arrows fly and indicated With aV portion of one member comprising the bolster in relative position. Fig. 3 is a perspective-v view, on reduced scale, of one of the chairs or separators removed. Fig. 4 is a View in side elevation of the entire truck on small scale, and Fig. 5

is a plan view of same on like scale.

This elevation includes a chair, as 10, a bearing-wheel l2 rotatably mounted thereon, and a bolster Vcomprising oppositelydisposed beams 14, supported on a plurality of said chairs. Thischair comprises anopen rectangular frame of considerable depth and of suitable length and width to receive a respective wheel, as 12, and preferably composed of a single piece of metal brought to the required shape by casting or the like. Adjacent the lower side edges of the chair suitable laterally-projecting ribs 15 are arranged as brackets, whichpreferably extend the full length ofthe chair and serve as extended bearings for the beams 14., and substantially midway the length of these sides suitable transversely-disposed apertures 16 are formed adjacent thelower edge to receive the ends of theaxle, as 17, of the bearing-wheel, and bolt-receiving giiooves 9 are formed longitudinally to the end walls of the chair to effect amore rigid connection of the bolster. The aperturesl are so disposed that the upper .portions thereof occur above the top edge of ribs l5, so that when the beams 14 are in place the lower 'edges thereof serve to prevent longitudinal displacement of the axle, which is ,thereby conveniently held in place and the use of set-screws, keys, or like fastenings for the purpose avoided and the height of the truck reduced to a minimum Without sacrificing clearance above the traction-surface. As now considered each bearing-wheel is mounted on suitable rollers, as 18, placed about the axle 17, and consisting of sections of round rods, which are preferably rendered of less length than the inside width of the chair, Eig. 1, so that they are permitted to move longitudinally on the axle to partially compensate for lateral irregularities in the track. Each bearing-Wheel is formed withbppositelydisposed treadembracing flanges on the periphery and preferably rendered with the'bore of less depthv thanthe length of rollers 18, so that the wheel will have snflicient lateral play thereon to avoid binding against the side of the chair in case of cramping on the track, and in the present embodiment an annular recess 20 is formed in the bore of the wallconcentric therewithand comprehends 'a reservoir to retain a supply of lubricant, as graphite or the like. This recess is preferably rendered substantially T shape, as viewed in cross-section, Fig. l, and so disposed that the stern portions extend to the bore and forms a restricted annular openingb'etween the head of the recess and bore, which prevents the passage of an excess of lubricant to the bearings of the wheel, while allowing the reservoir proper to be rendered of larger capacity, and furthermore leaves the major portion of IOO the Wall of the bore unbroken for a more perfect bearing. Leading to the recess 20 is a suitably-disposed aperture 21, through which the lubricant is conveniently introduced, and as now considered this aperture is formed in the web ofthe wheel closely adjacent the bore and is preferably arranged in a substantially horizontal position to better prevent escape of the lubricant.

In the present construction the beams 14 comprise channel-bars composed of steel and are equal in height to the width of the side of the chair measuring upwardly from the top of the brackets 15, so that the top surface of the truck is left even throughout. These beams are placed on said ribs 15 with their smooth side surfaces against the sides of the chairs and suitable apertures arranged in the web of the beams concentric with the grooves 9, formed in the end walls of the chair, and serve to bind said beams and chair rmly together.

In the present instance the truck is arranged with a chair adjacent each end of the bolster; but in extremely long trucks a centrally-disposed chair may be added if desired.

The device thus presented is simple of construction, has few parts likely to get out of order, and can be quickly assembled. It furthermore embodies maximum strength with minimum weight, as it is not necessary to cut away large portions of the channel to afford journals for the axles, which instead are journaled in the side walls of the chairs in seats of comparatively extensive length, and these bars have substantially long surfaces bearing upon the chairs, and can consequently be rendered correspondingly lighter Without sacriicing strength. By the particular arrangement for lubrication disclosed the bearings of the rollers are kept perfectly lubricated and the necessity for using oil for the purpose and resultant dangers of re in the kiln avoided. Furthermore, the space afforded for lateral play of the bearing-wheels on the rollers, as indicated, compensates for crookednessin the track, and thereby avoids cramping.

It will be understood that the lubricant normally lies in the lower part of the recess or reservoir, and as the wheel is operated portions thereof cling to the wall of the bore and pass above the rollers, and a part then falls thereupon through the restricted opening, while the balance strikes upon the opposite Wall of the head of the recess and returns to normal position. It willthus be seen that the head portion of the reservoir can be made of sufficient size to contain a comparatively large supply of lubricant, While but a limited portion thereof will pass to the bearings, and consequently the replenishing of the lubricant occurs at less-frequent intervals and a saving of time is elected.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States of America, is-

1. In a truck, a chair comprising an Open rectangular frame, and a bracket formed along the outer surface of each of the opposites sides of the frame, said chair having transverse bolt-recei ving grooves in the outer surface of its ends.

2. In a truck, a chair comprising an open rectangular frame having axle apertures formed in its opposite sides, and bolster-supporting brackets along the outer surfaces of the sides adapted to support bolsters across a portion of each aperture.

3. In a truck of the nature indicated; the combination with a chair comprising an open rectangular frame of considerable depth, and having a rib extending along the lower outer edge of each side and an axle-aperture in each side with a portion thereof above said rib; of a bols ter comprising oppositely-disposed beams seated on said ribs and means to secure the beams'to the chair.

4. In a truck of the nature indicated, the combination with an axle seated 4in separated supports; of rollers of less length than the distance between said supports and a Wheel mounted thereon having a hub of less depth than the length of said rollers.

5. In a truck, the combination with a plurality of chairs each comprising an open rectangular frame provided with a rib along the lower outer edge of each side and having axle-apertures in said sides, each end wall of said chair having a bolt-receiving groove, and an axle in said apertures, of a bolster comprising oppositely-disposed channel-bars seated on said ribs, and binding-bolts connecting said bars and lying in said grooves.

6. In a truck of the nature indicated; the combination with a chair comprising an open rectangular frame of considerable depth, and an axle seated in the sides of said frame; of rollers on said axle of less length than the `separation of the sides of said frame, and a wheel mounted on said rollers and having the hub of less depth than the length of the rollers.

7. In a truck, a plurality of chairs each comprising an open rectangular frame, ribs along the opposite sides ofthe chair, a bearing-wheel rotatably mounted in each chair, holsters comprising oppositely-disposed bars seated on the ribs, and means for securing the bars to the chairs.

8. In a truck, a plurality of chairs each comprising an open rectangular frame, a bracket formed on each of the opposite sides of the chairs, said sides having axle-apertures, each aperture having a portion above the bracket, axles supported in said apertures, bearing-wheels mounted on said axles, bolsters comprising oppositely-disposed bars seated on said brackets, and means for securing said bars to the chairs.

9. A truck of the nature indicated; coinprising a plurality of chairs each comprising an open rectangular frame of considerable depth and having a bracket extending along the lower outer edge of opposite sides and axle-apertures in said sides witha portion ICO IIO

1e means to bind said beams to the chairs.

10. In a truck, the combination with a chair supported by a bearing-Wheel, of a pair of oppositely-dispsed Channel-bars supported on the chair, and means for binding the @hair between the bars to prevent lateral displacement of the bearing-Wheel.

Signed at Seattle, Washington, this 4th day of August, 1902.

CHARLES ALCOTT GODDARD. Witnesses:

ALBERT JOHNSTON,

JAMES WEED.