US1173900A - Hoisting-machine. - Google Patents

Description

S. TOWNSEND.

HOISATING MACHINE.

APPLICATION FILED MAR. 25, I915.

Patented Feb. 29,1916.

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HOISTING MACHINE.

APPLICATION FILED MMLZS, 1915.

Patented Feb. 29, 1916.

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HOISTING MACHINE.

- APPLlCATlON FILED MAR.25,1915. I 1,173,900. Patented Feb. 29,1916.

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THE COLUMBIA PLANOGRAPH co, WASHINGTON, D.

S. TOWNSEND.

HOISTING MACHINE.

191739900. APPLICATION FILED MAR. 25, I915. 29

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SOLOMON TOWNSEND, OF CHARLESTON, WEST VIRGINIA.

HOISTING-MACHINE.

Specification of Letters Patent.

Patented Feb. 29, 1916.

Applicat-ion-filed-March 25, 1915. Serial No. 16,945.

To all whom it may concern Be it known that I, SOLOMON TOWNSEND, a

citizen of the United'Sta-tes, residing at Charleston, in the county of Kanawha and State of West Virginia, have invented certain new and useful Improvements in Hoisting-Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates broadly to improvements in hoisting machines, and more parti cularly to such devices primarily designed for the purpose of raising telegraph poles from the ground and depositing them into the post holes therefor.

The main object of the invention is to construct the machine in a very simple manner,

yet so as to produce the best results.

In carrying out the above object, another object is to provide novel means for guiding the poles as they are being raised and 1 lowered.

described, may be spaced. a considerable distancefrom said standard, thus allowing an elevating platform to be raised and lowered by said cable without coming 1nto contact with the standard.

vWith the above objects in view, the invention resides in certain novel features of construction and. combination hereinafter described and claimed.

In describing the invention, I shall refer to the accompanying drawings wherein like reference characters designate corresponding parts throughout the various figures, and wherein Figure 1 is a side elevation of a hoisting machine constructed in accordance with my invention; Fig. 2 is a top plan view thereof: Fig. 3 is a central vertical longitudinal section; Fig. 4: is a vertical transverse secti on as seen along the plane ind cated b the line44 of Fig. 1; Figs. 5 and 6 are detail side views showing different posit ons of bracing standards to be described: Fig. 7 is atransverse section through the front platform of the truck, illustrating the brake mechanism elevation; Fig. s8-isa detail horizontal section taken on the plane indicated by the line 8"8 of Fig. 1'; Fig. 9 is a perspective view of the lower end of the vertical extensible standard; Fig. 10 is a side elevation of the lower end of one of the supplemental braces, showing the application of the shoe plate thereto; Fig. 11 is a similar view with the shoe plate in section; Fig. 12 is a perspective View of said plate;

-Fig. 13 is a side view of the upper end of the vertical extensible standard, showing the application of a hoisting bracket thereto; Fig. 14 is a horizontal section taken on the plane indicated by the line 14114 of Fig. 13; and Fig. 15 is a detail longitudinal section through the parts shown in the last two figures.

In these drawings, constituting a partof the application, 1 and 2 designate the front and rear wheel supported axles of a truck, the rear axle being secured to the rear end of a reach bar 3 in respect to which it is braced by appropriate hounds 4. The front end of the reach bar 3 is secured to a transversely extending bolster 5 beneath which the front axle 1 is pivotally mounted upon anupright king bolt 6, the bolster 5 being here shown as'braced bv a pair of forwardly diverging hounds 7. The truckproper is completed by the provision of a tongue 8 connected to the front axle 1, and bv front and rear rectangular platforms 9 and 10.

The rear platform 10 overlies the rear end of the reach 3, the rear axle 2, and the rear hounds 4 and is secured to all of these parts in any appropriate manner. The rear edge of the platform 10 is provided with a rectangular notch 11 through wh ch depends the lower sect on 12 of a vertically extensible and contractible standard 13 whose upper section 14 slides within the section 12, which latter is necessarily of hollow formation. As most clearly disclosed in Figs. 2. 3 and 8, the lower section 12 of the standard 13 comprises two upright side boards or plates 15 whose rear lower corners are p ovided with rectangular notches receiving the rear axle 2, while secured at their edges to the front and rear edges of the side plates 15, are front and rear upright plates 16 and 17 respectively. the lower end of the former being provided with a notch 18 which straddles the rear end of the reach 3 while the lower end of the rear plate 17 is rigidly secured by any preferred-means to therear side of the rear axle. By this construction, it will be evident that the lower section 12 of the stand ard 13 is effectively braced, to a certain extent, although it is necessary in most cases to provide supplemental means for preventing the entire machine from tilting laterally when a pole or the like is being raised.

The supplemental bracing means just described, is in the form of a plurality of longitudinally extensible and contractible bracing bars 19 which are formed in upper and lower slidably connected sections adapted to be held against movement by clamping screws 20 or the like, the lower ends of the bars 19 being sharpened as at 21 for engagement with hard soil or the like, thus holding the bracing bars 19 against movement when they are disposed to active position. In this position, as clearly shown in Figs. 1, 2, 3 and 4, the various bars 19 diverge downwardly from thei pivotal connections 22 with the upper end of the lower standard section 12. lVhen the braces 19 are not in use, however, and the entire machine is being drawn to a distant place to be used, the same are shortened and allowed to hang loosely from the connections 22, adjacent the side plates 15 (see Fig. 6). After said braces have been set to the proper length, however, and the machine is only being transported from one post hole to the next, all of said braces are swung forwardly and temporarily seated within notches 23 which are formed in the front edges of the rear platform 10. In this position, the lower pointed ends of the aforesaid braces clear the ground, but it will be evident that they are of the proper, or approximately the proper length for use when the machine is again set.

It often occurs that the machine must be used on very soft earth, which would cause the pointed ends 21 to be forced thereinto, thus preventing them from exerting the proper bracing action. This objection, however, is overcome by the provision of a plurality ofshoe plates 24 which are here shown of rectangular formation and as having elongated slots 25. Rising from the plates 24 on opposite sides of their slots 25, is a plurality of pairs of ears 26 which are perforated as shown. In applying the shoe plates 24 to use, they are positioned upon the lower ends of the bracing bars 19, which lower ends are then received by the slots 25. Bolts 27 are then passed through the perforations in the ears 26 and through similar openings in the bars 19, these last named openings being spaced considerable distances above the points 21 of said bars, thus allowing the same to project beneath the plates 24 to prevent the latte from sliding upon the ground.

By the provision of the plates 24 previously described, although they are of very tion;

The before mentioned upper standard section 14, although it might be well constructed in practically any suitable form, preferably comprises a pair of upright side plates 28 whose upper ends are connected by a transverse bar 29 supporting a pulley 30 while their lower ends are likewise connected by'a transverse plate 31. Secured between the front edges of the two side plates 28, is an upright front plate 32 which is spaced rearwardly from said edges an amount suflicient toprevent a ladder 33 from abutting the upper edge of the front plate 16 of the lower standard section 12. The aforesaid ladder 33 is disposed between the projecting forward edges of the side plates 28 and is shown as having but one upright 34 disposed substantially centrally between the two plates 28 and connected to the projecting forward edge of one of these plates are a plurality of rungs 35. The ladder33 just described cooperates with any preferred type of ladder 36 which rises along one sideof the front plate 16 as clearly shown in Figs. 1 and 2.

Secured between the rear edges of the side plates 28, is a rear upright plate 37 which, like the plate 32, terminates a considerable distance below the bar 29. In the present embodiment, the plate 37 is shown as provided with an upright channel or groove 38 in its rear face extending throughout the length thereof, this groove serving as means for guiding the raising and lowering of telegraph poles and the like as dotted in Fig. 3. The groove 38, in the present case, coacts with a similar channel or groove 39 formed in and continuing throughout the length of the rear side of the plate 17 of the standard section 12.

Since the upper section 14 is normally lowered by gravity within the lower section 12, it becomes necessary to provide means for raising said section 14 when necessary. For this purpose, the lower end of the front plate 32 is notched as seen at 40 for the reception of the lower end of a cable 41, which is secured by any preferred means to the bottom plate 31 of said section. The intermediate portion of the cable 41 is passed over a pulley disposed within an opening 42 with which the front plate 16 of the section 12 is provided, then extends beneath an additional pulley 43 secured'to the platform 10 in advance of the section 12 and rises from this pulley 43 to a Windlass 44. -The ing dogs 46 are pivoted for engagement with ratchets 47, the latter being secured to the ends of the Windlass 44 as shown. In the accompanying illustration, the ends of the Windlass shaft 48 are shown as extending beyond the cheeks 45 and as being squared for the reception ofa crank (not shown), whereby the Windlass 44 may be rotated to raise and lower the upper section 14 at will.

Rising from the front platform 9, is a pair of upright cheeks 45 between which av Windlass 44 is mounted, this Windlass being of a construction identical with the Windlass 44 previously described, further descript on being therefore deemed unnecessary. Wound upon the Windlass 44 and depending therefrom beneath a guide pulley 50, is a hoisting cable 51, this cable likewise extending beneath. a pulley 52 which is secured to the reach bar 3 in advance of the front edge of the platform 10. From the pulley 52, the cable 51 rises above an additional brace bar 53 with which the lower section 12 is provided and is passed over the pulley 30 at the upper end of the upper standard section 14, from which pulley it depends and is provided with any preferred type of hook or grapple 54.

In addition to passing beneath the pulleys 50 and 52, the cable 51 passes through a V-shaped notch 55 in the upper edge of a bar 56 which is secured to and rises from the rear edge of the platform 9, the lower end of the notch 55 being preferably rounded as shown to prevent cutting of said cable. Pivoted at 57 to one side of the bar 56, near one of its ends, is a brake lever 58 having a V-shaped notch 59 which, when the lever is lowered, coacts with the notch 55 to provide means frictionally engaging the cable 51 and thereby controlling the lowering of the hook 54 and any member supported thereby.

The construction so far described, is provided primarily for the raising and lowering of telegraph or telephone poles, but by certain provisions, I may adapt the machine to the raising of practically any material or body. I accomplish this result. by the provision of a detachable U-shaped bracket 60, the arms of this bracket being provided with stop shoulders 61 which are spaced inwardly from their terminals and which are adapted to abut the rear edges of the side plates 28 when the bracket is applied to use as shown in Figs. 13, 14 and 15. Although the free end portions of the aforesaid arms of the bracket 60 are disposed in parallel relation for contact with the outer sides of the aforesaid plates 28, the inner ends of said arms converge to pro ide the arch or crown 62 of the bracket. The latter is provided with a pair of parallel ears 63 between which a grooved guide pulley 64 is revolubly mounted, this pulley being adapted to receive the cable 51 and'to space the same and its hook 54 in rear of the standard 13 as shown in Fig. 13.

In order that the bracket 60 may be detachably connected to the upper standard section 14. I provide the arms of said bracket with upright keepers 65, these keepers being here shown in the form of vertical openings, although it will be evident that they might well be in other forms. The keepers 65' receive upright pins 66 which rise from stop blocks 67 secured to the side plates 28 of the upper standard section 14 near the top thereof, thus rigidly yet removably connecting the bracket 60 with said section. In order to eflectively brace the bracket, however, an arched brace rod 68 is provided, the crown of this rod being pivotally secured to the crown of the bracket 60 by any appropriate means, while its arms are provided with right angular stop members 69 formed integrally therewith by bending the free ends of said arms. The stops 69, when the rod is applied to use, abut the rear edges and the outer sides of the side plates 28 and bear upon stop blocks 70 secured to said plates. It will thus be seen that the bracket 60 is effectively supported in its horizontal position, yet that said bracket may be easily remo ed when desired.

Although the positioning of parts just described, including the application of the bracket '60 to use, might well be used for any purpose in which it is necessary to space the vertically moving stretch of the cable 51 from the standard 18, this combination of parts is preferably used for the hoisting of an elevating platform 71 above which an eye 7 2 is disposed, said eye being connected with the four corners of the platform 71 by any preferred means and receiving the hook 54 as clearly disclosed in Fig. 13.

From the foregoing description, taken in connection with the accompanying drawings,

it will be evident that although comparatively simple construction has been provided for carrying out the objects of the invention, the complete machine will be very eflicient in operation and will possess a number of advantageous features. Particular emphasis is laid upon the provision of the shoe plates 24, the notches 23 for retaining the braces temporarily in active position, the specific construction and mounting of the standard 13,

and upon the structure of the detachable bracket 60.

In the foregoing description, I have described a number of details of construction which I preferably employ for producing the best results, and in the accompanying drawings, I have shown these details. It will be understood however, that I need not be limited thereto, otherwise than as set forth in the appended claims. It will likewise be clear that although any preferred means guide at the upper end of said standard, and

a hoisting cable-passed over the guide.

I 2. In a hoisting machine, an, upright standard including a fixed and a vertically 15 slidable section having upright alined pole guiding channels, a guide at the .upper end of the standard, and a hoisting cable passed over said guide.

In testimony whereof I have hereunto se my hand in presence of two subscribing Witnesses.

SOLOMON TOWNSEND. Witnesses a i P. C. HARPER, D. A. TOWNSEND.- i

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

' Washington, D. G.

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