US136334A

US136334A - Improvement

Info

Publication number: US136334A
Authority: US
Publication date: 1873-02-25
Anticipated expiration: 1890-02-25

Description

2 Sheets--Sheet1.

D. E. MYERS.

Mechanismfur Transmitting Power.

No. 136,334. Patented Feb.25,1873.

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Mechanism for Transmitting Power.

No. 136,334. PatentedFeb.25,1873.

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DAVID E.- MYERS, OF LOGANSPORT, INDIANA.

Specification forming part of Letters Patent No. 136,334, dated February 25, 1873.

To all whom it may concern:

Be it known that 1, DAVID E. thefts, of Logansport, in the county of Cass and State of Indiana, have invented a new and valuable Improvement in Aceumulative-PowerWheels and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing making a part of this specification, and to the letters and figures of reference marked thereon.

Figure l of the drawing is a front view of my power-wheel. Fig. 2 is a side view of same.

This invention has relation to an'improved mechanical movement for the purpose of transmitting power and changing rotary into reciprocating rectilinear motion; and it consists in the construction and novel arrangement of a folding and expanding frame, connected with a rotary shaft, and composed of a system or series of linked levers, which, deriving their power from or through the medium of the rotary shaft or its equivalent, transmit their accumulative forces to some particular object. This invention also consists in the combination and novel arrangement of said folding and expanding frames with cranks or eccentrics and connectingrods, in such a manner that they may unite to overcome the dead-point of the crank to which the motive power is applied, and serve to economize motion, which would be lost by the use of a single frame.

The apparatus constituting this invention is designed for application to any and all purposes requiringthe exertion of great accumulative force upon a single point or object, through the medium of which said force may be transmitted in the manner herein described.

To enable others to clearly comprehend the nature of this invention, I will proceed to specifically describe the same in its most complete form.

Description of the Form and Arrangement of the Accmnulat'ioe-Power Apparatus, with its Mode of Action and Eficcts.

Referring to the accompanying drawing, A designates ahorizontally-arran ged rotary shaft having formed at its middle a double crank, B, and at each end a single crank, designated, respectively, B B 0 D E F represent four double or single bars or levers, pivoted to gether at their ends so as to form a diamondshaped frame or parallelogram, which will expand in one direction and contract in the other upon the application of force to opposite angles. G H designate pivoted bars, connecting the bars on opposite sides of the frame, pivoted midway between the ends of said side bars, and crossing each other at the center of the frame. At the junction of the two bars G H an eye is formed for the shaft A to pass through. v r

As will be observed by reference to Fig. 2, there are two of these frames arranged upon or connected with the one central shaft. The angles of said frames are at opposite ends of lines drawn horizontally and vertically through the centers of the frames. The upper and lower ends of said frames are attached to blocks I arranged to travel vertically between guides J resting on the ground or depending from a beam, J The double crank B is connected, by means of a pitman, J to the up.- per end of one frame, and, by means of a pitman, J to the lower end of the other. The cranks B B are connected, respectively, to the upper and lower ends of the respective frames by means of connecting-rods b 1). (Jonnected to the crank B is a. pitman, K, through the medium of which the shaft A is rotated, the motive power being a steam-engine or any other desirable means for applying force.

As the shaft A turns the power-frames are alternately folded and expanded in vertical directions, one being fully expanded when the other attains its greatest contraction.

By the use of separate cranks for the connecting-rods or pitmen J J arranged at an angle of, say, ninety degrees to each other and to the crank B, the expanding and contract ing movements of the power-frames may have a different relation to each other from the movement obtained when the cranks are arranged as shown.

The advantage secured by such modified arrangement of cranks is the overcoming of the dead-center and the more uniform move ment of the power-frames.

L designates a T- shaped brace, through the lower end of which, at the junction of the side arms 1, passes the shaft A. The vertical post and arms of said brace are slotted lengthwise, and embrace, respectively, the upper and side angle-pivots of the power-frame. The upper end of said brace is secured to the beam J This brace serves as a support to the powerframe, and during the contraction and expansion of the latter the pivots at the top and side angles travel through the slots of the brace. M denotes a vertical longitudinallyslotted bar, which may embrace the pivot of the lower angle of the power-frame, and which is the device upon which all the accumulated power of the frame is eventually concentrated.

The devices by which this power is obtained will now be explained.

Referring to Fig. l of the drawing, A A deaignate links pivoted to the bars 0 D of the frame a short distance below the pivotal points of the bars G H, which are fulcrums to the bar (1 D. The links A A connect the bars (3 to the upper end of the bar M. Hence, when, by the motion of the shaft A and connectin grods, the power-frame is contracted vertically, the bars 0 D are utilized as levers of the first order to draw the bar M upward through the medium of the links A A. The bar M has also connected to it two links, in m, which, lying parallel respectively to the bars G H, and below the latter, are connected each to the middle part of a link, m m. These links are pivoted, respectively, to the bars E F above the middle pivotal points of the latter, and are attached at their inner and upper ends to links a a, connecting them to the bars G H above the shafts A. The bars E F are thus utilized as levers of the first order to concentrate and transmit power derived from the shaft A to the bar M through the medium of the second class levers m on. Power is also transmitted to the bars G H by means of the links a a, and is utilized through the indirect medium of j the bars 0 D E F. It will be thus seen that there is a great concentration of powerupon the bar M, tending to raise the latter, and to lift any weight or move any body to which it is attached.

A single power-frame may be used to great advantage where the power is required in an upward or downward direction only, and is especially useful in lifting stones, extracting tree-stumps, and the like; but when a continuous uniform power is required, as in turning a shaft arranged as shown at P, two power frames, arranged as shown in Fig. 2 and opcrating as described, are required. The shaft P will be then furnished with two cranks, R R, arranged diametrically opposite each other. The rotary motion of the shaft 1? will then be produced by the alternate ascent of the rods M, each of which will produce a half rcvolu tion. The dead-point may be overcome by a balance-wheel, Q, placed on the shaft P between or at one side of the cranks.

The power from the main shaft is applied to the upper angle of the frame, and, bearing downward, causes the bars 0 D to act as levers of the first order, the joints of the bars G H serving as fulcrums. The accumulated power is concentrated on the anchor-levers S, which are connected to the bars E F, and thence depending are attached to the object to which their force is to be applied. In order to utilize the bars G H as direct mediums of power they are pivoted to a pair of toggles, Z Z, which have their connecting-joint at their upper ends, and are attached at their lower ends to the pins which couple the anchor-levers S.to the bars E F. To permit the necessary movement of said pins the bars E F are slotted, as shown at m m. The levers S and Z Z are sometimes used with the short anchor-levers T, pivoted to the bars G H and to the toggles Z Z, as shown. The power to operate the frame may be applied to the angles either by connecting-rods from cranks or by any other available means, which it is unnecessary to describe.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. The improved machine for transmitting power, consisting of thejointcd frame 0 D 111 F, connecting-bars G H, levers A A bar M, links at m m m a a, crank-shaft A, and connecting-rod I), constructed and combined substantially as specified.

2. The combination of the two power-frames, constructed and arranged as described, with the crank-shaft A, ways J, brace L or equiva lent, and lifting-bar M, substantially as specitied.

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

DAVID ELISHA MYERS.

Witnesses:

FRANKLIN S. UROOKETT, A. M. TaoUmmN.