US1751266A - Power swing mechanism for paver booms - Google Patents

Description

March 1 8, 1930. J. DANIEL. 5

POWER SWING MECHANISM FOR PQVER BOOMS Filed Sept. 15, 192'? *2 Sheets-Sheet 1 8 3 z @iM 32 1 J I 7 /5 7 I 1; 9 29 4/ I w/L /0 g I I I, Q i I 4- I 2 I ml Q 6/ I 2'; A m r /9 I;

March 18, 1930. J. DANIEL POWER SWING MECHANISM FOR PAVER BOOMS Filed Sept. 13, 1927 2 Sheets-Sheet 2 amt-Mm Patented Mar. 18, 1930 UNITED STATES PAT JOHN DANIEL, OF MILWAUKEE, VVIES(Z'O1-TSIN, ASSIGNOB TO KOEI-IRING- COMPANY, OF

NT OFFICE,

MILWAUKEE, WISCONSIN, A CORPORATION POWER SWING MEGHANISM FOR PAVER BOOMS Application filed September 13, 1927. Serial No. 219,342. 7

In the'operation of boom and bucket pavers, distribution of the concrete is elfectlve over a very wide are through the adjustment of'the swing-boom. This adjustment is secured in the majority of instances by manuallyshifting the boom about its pivot, either through the instrumentality of a hand operated shaft geared to the boom, or by pressure exerted by the laborers against the outer portion of the boom, as the work proceeds. Both of these methods have numerous disadvantages, among which may be mentioned the paratus, suchas now commonly used, is exceedingly dificult especially where the machine may happen to stand upon an incline and is more less canted to one side in which event'the movement of the boom about its pivot through a rising plane is frequently impossible or requires a combined effort of a number of workmen.

The present improvements have as their object to provide a power swing for the boom by which is meant an adjustment of the boom through the application of the motive power of the engine employed for operating the mixer, the bucket, the traveling support and other operating instrumentalities of the apparatus.

' To this end the invention seeks to provide a simple mechanism for transmitting motion from the prime mover to the boom so that the latter may be adjusted quickly at any time desired for effective distribution of the materials bythe bucket traversing the boom.

In carrying out this idea, I have combined the necessary operating mechanism for adjusting the boom with mechanism employed for shifting the discharge chute of the mixer so that, by a single control lever,-the opera- I,

tor may shift the chute to either its mixing or discharging positions, or swing the boom in opposite directions, as the case may require. However, I do not wish to be restricted to such combined control since it will be quite obvious that the adjustment of thechute and boom may be independently accomplished by a proper segregation of the means for operating these members within the skill of a mechanic familiar with the principlesof these mechanisms. i

In the accompanying drawings:

Fig. 1 is a front elevation of my power swing mechanism applied to a conventional form of paver apparatus, illustrating only such details of the latter as are necessary for a general understanding of these means;

Fig. 2 is a side elevation thereof;

Fig. 3 is a detailed view of thelclutch' shifting fork and its supporting bracket;

Fig. 4 is a detailed view of the control lever andits guide block;

Fig. 5 is a sectional view taken about on the plane indicated by the line 5-5 of Fig. 1, showingmore clearlythe operating connections between the power shaftand the respective boom and chute adjusting shafts Fig. 6 is a fragmentary view of the clutch housing and its lever accommodating slot and showing the various positions of the'control lever for cheating the several boom and chute adjustments; and I Fig. 7 is a horizontal sectional View on the line Y 'Z of Fig.1. r

Referring to the drawings, and specifically describing the mechanisms, 10 designates the framework of a paver machine on the end of which is pivotally mounted the swingboom 11 and the swing-chute 12 secured to its adjusting shaft 13 disposed transversely of the frame'and having at one end the operating handle 13.

At one side and extending longitudinally of the frame is arranged the power shaft 14 journalled in the forward bearing 15 and constantly driven by the engine (not shown). On the end of this shaft are the opposed bevel pinions 1616, eachprovided with the clutch element 16 with which the respective cone clutches 17 are adapted to engage. The pinions constantly mesh with a gear 18 fixed on engagement, a control lever 20 is provided,

the end of a counter-shaft 19 to which motion in reverse directions is transmitted from the 7 power or drum drive-shaft by the engagement of'the clutches 17. F or effecting this said lever being formed with the yoke 21 em bracing the customary ring carried by the clutch spool. The lower end of the lever is formed with a ball or nub 22 which is received by the grooved guide block 23 secured to the bracket support 24 attached to the bearing 15;

Upon the inner end 'of the counter-shaftis loosely mounted a cable drum 25 formed with a clutch face 26 with which the cooperating.

in Fig. 4:. The end of the arm is disposed between the springs 33 on the rod 32 to provide a snap-over action, as will be more clearly apparent from the following detailed 'description.

Upon'the shaft 19, at the opposite side of the clutch collar is also loosely mounted the sprocket wheel 34 formed with a clutch face 35 and, connected by the chain 36'with the boom-swing shaft 37 having an accommodat ing chain sprocket .38 splined thereon. It so happens that this shaft 37 is the one customarily employedfor manually adjusting the boom about its pivot, advantage being taken of such element, where the apparatus is provided with a manual means of this sort;

' but, of necessity, where no such shaft is employed, one may beprovided as a part of the equipment constituting the power-swing mechanism of this invention. Such shaft is provided with an ordinary worm indicated at 39 meshing with the gear segment 40' carried by the boom support. Itis also preferably supplied with a hand adjusting wheel 41 so that either the power or hand adjustment of the; boom is obtainable, as necessity may require. It will beapparent, from the foregoing description, that the motion of the chain 19 may be transmitted to the shaft 37 for swinging the boom by simply shifting the control lever 20 in the proper direction to bring the cutch collar 27 into engagement with the sprocket 34. The direction of movement of the boom, as well as the direction of movement of the discharge chute will, of course, depend upon the direction of rotation of shaft 19, as controlled by engagement of respective clutches 17 This compound movement, so to speak, of the lever 20 ispermitted by the virtue of the engagement of the ball 22 with the grooved guide. 23.

To serve as a guide for the respective movements of the lever, I preferably provide the cover of the clutch housing 42 with a guide slot 43, in the shape of the letter H, a'sshown clearly in Fig. 6. The position of the lever at a is neutral; at Z) produces a right boom: swing, speaking with reference to the position of the operator when facing toward the boom from his station on the platform of the machine; atc the left boom-swing; at d positionsthedischargechute in mixing position and at e in discharge position. Forward and rearward movements of the lever-at one sideof the slots, therefore, effect chute operations and corresponding movements atthe other side of the .slot efiect boom adjustments. U I

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is i 1. In a concrete 'paver in combination-, a movablechute for amixing drum, aswingable boom adjacent said'chute, an operating said boom, and common control means for efiecti'ng operationof either said chute or said boom from-said shaft.

' 2. In a concrete paver in combination, a movable chute for a mixing drum, a swingable boom adjacent said chute, a. power operated. shaft, means cooperating with said shaft I for producing reverse motions, and'means inshaft operatively connected to saidchutei and shafts, said clut'ch. means having a common control.

4. In a concrete paver, afram'e, a swingboom connected thereto, a swing-chute for a mixing drum andadjacent said boom, a constantly driven operating shaft, a countershaft operatively connectedto the chute and boom, clutch means intermediate the operating shaft and the counter-shaft for driving the counter-shaft in. either direction, and clutch means intermediate the counter-shaft and the chute and boom for connecting either. the chute or the boom to the-reversible counter-shaft.

5. In a concrete-paver, a frame, a swingboom connected thereto, a swing-chute fora mixing drum and adjacent said boom, a constantly driven operating shaft, a countershaft operatively connected to the chuteand boom, clutch means intermediate the operat ing shaft and the counter-shaft, and control means common to both clutch means.

6. In a concrete paver, a swing-boom connected thereto, a movable chute, an engine operated shaft, a counter-shaft having gear connection with the engine shaft, clutch means on the engine shaft for transmittlng reverse motions to the counter-shaft, a shaft operatively connected to the boom, means for transmitting motion from the counter-shaft to the boom operating shaft, a chute operating shaft, means on said counter-shaft for transmitting motion to the chute operating shaft, and a control lever connected to the last named means and t0 the clutch means on the engine shaft.

7. In a concrete paver, a frame, a swingboom connected to said frame, a swing-chute mounted on said frame adjacent the boom, an operating shaft, means for swinging the boom or chute from the operating shaft, and a control lever shiftable laterally to transmit motion of the operating shaft to either the chute or the boom and forwardly and rearwardly to effect reverse swing movements of the chute or boom.

8. In a concrete paver, a frame, a swingchine, combined with a distributing device for receiving said materials and distributing them to the subgrade, including a boom, and a common control device for causing operation of the chute and for moving the boom to control the distribution action thereof.

10. In combination, a discharge chute'for concrete distributing machines adapted to control the discharge of a concrete mixer by which aggregates are commingled, a distributing device cooperative to receive mixed aggregates discharged by the chute and including a boom for facilitating such distribution, power mechanism for the operation of the chute and the said boom, and a control device common to the said parts for their proper operation.

In testimony whereof I aflix my signature.

JOHN DANIEL.

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