USRE5823E - Improvement in pug-mills - Google Patents

Description

UNITED STATES PATENT OFFICE.

GEORGE E. NOYES, OF VASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO HIMSELF AND E. N. GRAY, OF SAME PLACE. i

IMPROVEMENT IN PUG-MILLS.

Specification forming part of Letters Patent No. 95,374, dated September-28, 1869; reissue No. 5,823, dated April 7,1874; application filed February 2l, 1874.

To all whom it may concern:

Beit known that I, G. E. NOYEs, of Washington, in the District of Columbia, have invented new and useful Improvements in Machines for Tempering Clay and other substances; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawings making part of this speciiication, in w-hich- Figure l is a plan or top view of my improved machine, showing the receptacle for the clay or other substance to be tempered, the wheel for acting on such substance, and the gearing for driving this wheel. Fig. 2 is a vertical sectional elevation taken on line .r a: of Fig. 1, showing the arrangement of gearing for driving the tempering-wheel from below the bed or receptacle in which the material to be tempered is placed. Fig. 3 is an eleva tion of thepinion to be used in propelling the tempering-wheel, together with a portion of its circular rack, as they are usually constructed. Fig-4 shows a pinion constructed according to my invention.

Corresponding parts in the drawings are designated by similar letters. l

This invention has relation to machinery for tempering clay to be made into bricks and other objects. The novelty consists in the construction and arrangement of the gearing' for actuating a tcmperingwheel shaft which revolves loosely around a center drivin g-shaft, as will be hereinafter more fully set forth.

Serious difficulties have been encountered in constructing and operating machines of this class, from the fact that the power which has propelled them has beenco minunicated through some horizontal shaft above the receptacle for the material to be tempered, which arrangement has necessitated the use of along` vertical shaft to communicate the motion of such horizontal shaft to the shaft and gear-wheels which propel the tempering-wheel. This ar rangement of the parts has rendered necessary expensive, and in many cases inconvenient, frame-work to support the shafting, which often interfered with the efficient operating of the machine, and was always a large addition to its cost. Another and a very serious objection has arisen from the fact that the pinion which meshes into the circular rack upon the upper surface of the clayreceptacle has been constructed in accordance with well-known rules 'as to its diameter and the pitch-line of its teeth, which form of construcf tion is found defective in this particular case.

.It is the design of this invention to remedy the evils above alluded to, which result is accomplished in the following manner:

In the annexed drawings, A designates a receptacle for the material to be tempered, which receptacle may be made of any suitable material, and it should be of a circular form. This receptacle may be lowered into the earth to apoint near the circular rack C upon its upper surface, which position will greatly facilitate the lling of the same, or it may be placed upon a foundation of any kind,

and be elevated to any required height, toA

give ready access to the gearing upon the lower end of shaft H. The dimensions of this receptacle will vary according' to circumstances, very good proportions for one for tempering clay for manufacturing into bricks bein g twenty feet in diameter by two feet deep. f B represents the annular space formed in the receptacle, and C represents the gear, which is secured to the upper surface of the receptacle. This gear, which is annular, may be made in segments; or it may be cast entire, and any requiredpitch may be given to the teeth that will give them the required strength. D represents the pinion which meshes into the gear C, the usual method of construction of which pinion being represented by Fig. 3.

It has-been found, however, that for this particular purpose a wheel so constructed is very defective, for the reason that it will not remain in gear with wheel C when propelling the tempering-wheel, for the reason that the contact-surface is only upon the front faces of the teeth of wheel C, or that surface which is in the direction of the motion of the pinion. This being the case, the tendency is to lift the pinion out of gear with wheel O, thus causing a stopping of the tempering-wheel, and endangering the breaking of the gearing. To remedy this defect, ,I

construct the pinion D as shown in Fig. 4, the change consisting in adding to its diameter about one-half of an inch-wheny the diameter of the pinion is, say, ten inches-but retaining the same number of teeth, so that each tooth of the pinion, as it enters the space between the teeth of wheel C, shall reach` so far forward as to come in contact with the rear faces of the teeth of such wheel, and thus 'be forced spur-wheel, which is secured to the inner end.

ofthe shaftE, and meshes into, and is driven by, the wheel G, which is secured to the upper end ofthe shaft H, or to such portion thereof as to cause it to mesh with wheel E and drive the same. Hrepresents a vertical shaft, which has its bearings in boxes secured to the center of the receptacle A, and which extends down through such receptacle for some distance,A and has secured to its lower portion a wheel, G', which meshes into any driving-wheel supplied for the purpose: I represents a box or bracket, the lower horizontal portion of which embraces the vertical shaft H and revolves thereon.v The horizontal portion of this bracket extends outward from shaft H some distance, where it joins the vertical portion thereof, which vertical portion is provided with a slot in which the bevel-wheel F works,y that portion of saidl bracket which is inside of this wheel serving as the support and bearing for the inner end of shaft E, while that portion thereof which is outside of said wheel has a slot formed in its upper end, through which the shaft E passes. To this outside portion there is to be secured a box or bearing for the inner end of shaft k to revolve in.

The arrangement of these parts is such that,

as the vertical shaft H isl revolved, the bev-V in which movement it carries with it the y bracket I, the. shaft K with its temperingwheel K1, and also a disk or wheel, K2, which l supports the outer end of shaft Kb K represents the shaft above alluded to, its inner end having its bearing-in a box secured to the bracket I, while its outer end is supported by the wheel K2, which rotates with such shaft upon a track formed on wheel C inside of the teeth of this wheel 5 or, if preferred, the track may be on the outside of the teeth of wheel (l. The tempering-wheel Kl is applied on its shaft K so as to revolve freely, and at the same time to receive movements in a direction with the length of this shaft. The endwise movements may be given to wheel Kl by means of a rack and pinion, by means of a screw, or by any other suitable means. L represents al rod or chain, which is attached to the outer end of the shaft E, or to a point just inside the pinion D, from which point it extends to the outer end of the shaft K, to whichit is secured. This rod or chain L is attached to the shaft E in such a manner that this shaft shall revolve freely therein, so that,

`as such shaft revolves, it shall, by acting on such rod or chain, draw after it the shaft K 'and the tempering-wheel Kl.

Y What Il claim as new, and desire to secure by Letters Patent, is

l. The combination, with a peripheral gear or annular rack, C, of a revolving propellingshaft, E, which receives its rotation from a center drivingshaft, and which carries at its outer end the pinion D, attached thereto, engaging with said rack, substantially as and for the purpose specified.

2. The propelling-shaft E, having the pinion` wheel D keyed to its outer end, which wheel engages with the circular rack C, and receives its movements from a vertical center shaft, H,

passed through the center of the bed A, through the medium of bevel-wheels G F, in combination with the tempering-wheel K1 and revolving shaft K, substantially as and for the purposes set forth.'

3. The'bracket I, in combination with shafts E and K, and applied to revolve around the vertical shaft H with said shafts E and K, as and for the purposes set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

GEORGE E. NOYES.

Witnesses GEORGE E. UPHAM, PHIL. G. MASI.

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