US286357A

US286357A - Feed mechanism for saw-mills

Info

Publication number: US286357A
Authority: US
Publication date: 1883-10-09
Anticipated expiration: 1900-10-09

Description

(No Model.)

W. M. WILKN.

FEED MEUHANISM FOR SAW MILLS.

Patented 001;. 9, 1883.

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'UNITED STATES PATENT. OFFICE.

' WILLIAM M. wILKIN, or EAST sAGINAw, MICHIGAN.

FEED MECHANlSM FOR SAW-MILLS.

EPECIFICATION forming part of Letters PatentNo. 286,357, dated October 9, 1883.

Application filed April 1B. 1883. (No model.)

.Mechanism for Saw-Mills, and I do hereby 4 and improved rope .feed and gig apparatus for l 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. Y

This invention consists in providing a new operating the log-carriage of a sawmill.

The invention is illustrated in the accompanying drawings, as follows: Figure 1 is a top or plan view of a saw-mill in which this invention is applied. 'Fig'. 2 is a side elevation. Fig. 3 is a detail of construction, being a section of the friction-gearing. i

The parts shown are indicated by letters of reference, as follows:

P P are the carriage tracks or ways. N is the carriage. C. is the saw, and C the sawarbor; B is the driving-pulley on the sawarbor. A is the main driving-pulleyon the main shaft. pulley on the main shaft. d `is the feed and gig driving belt. D is the main pulley on the feed and gig counter-shaft, which is on the same door of the mill as the main shaft. F is a second counter-shaft, arranged immediately below the carriage-way, and is in function the same as a rag-shaft, and for convenience will be called the rag-shaftj F are pulleys on the shaft F. fis adirect-aeting belt, running from the pulley F3 on the counter-shaft to the pulley I4v on the rag-shaft.

4o f is a back-loop belt, which runs from asimilar pulley to F'f on the other side of the pulley D', over reversingpulley h h. tothe pulley E on the rag-shaft. G and G are frictiondisks connected, respectively, with the pulleys F and F. T is a sheave mounted on the ragshaft, and may either be mounted'loose, as shown in Fig. 3, and held from lateral Inove- Inent by collars, or it may be keyed on the shaft. Tl is a second sheave at the opposite end of the carriage-way. R is awire rope,

running over the sheaves T and T', and hav- D is the feed and gig drivingy ing its ends attached to the carriage by elastic draw-heads S. U is a tightener for the cable R, and V is a tightener for the reversing-pulleys h h.

In an application for a patent ied by me August 2l, 1882, for a rope feed and gig apparatus, I refer to the fact that a carriage may be operated by a single cable attached to the 'carriage and running on sheaves placed at each end of the carriage-way on shafts which revolve oppositely, said sheaves being operated from said shafts by clutches.

The present invention is ran improv ement on the `construction just referred to, in that the cable'is propelled always from one end of the carriage-way, thus saving in gearing, and the 'manner of clutching is much improved.

The Vclutching apparatus shown here is substantially the same as that shown in another application by me of even date herewith, where f it is applied to an ordinary rag-shaft. In this instance the double-cup friction-disk is made a sheave for propelling the cable.

The friction-disks G and G are moved or shifted into connection by the gearing I I I2 I?, I4 I5 I, of which I6 is the sawyerslever. By this means the sawyer has perfect control of the clutching apparatus, and can reverse the movement of the sheave 'I at any time, and so change the direction of movement of the cable R, and thus of the carriage also.

What I claim as new isl. In the feed and gig mechanism'of a saw.;

mill, the combination, substantially as herein shown, of a carriage having an elastic drawhead, two friction-disks sleeved upon one shaft, geared to run in opposite directions, and arranged to face each other, a rope-propelling sheave having friction-disks on each of its sides, mounted on said shaft between said sleeved disks, shifting mechanism for throwing either of said sleeved disks into contact with said sheave, and, finally, a propelling-cable at tached to the logcarriage and passing over said sheave, and another sheave placed at the opposite end oi the carriage-way.

2. In a sawmill, the combination, lsubstantially as shown, of the following elements: two sheaves placed one at each end of the carriage-way, a rope or cable passing over said sheavesand connected at its ends with the IOO n Y Y @$6,357

log-carriage, two clutching devices geared to clutcliingdevices into gear with the adjoining Io be revolved in opposite directions, and mountclutching-surface onthe said sheave.

ed upon the shaft of one of said sheaves and In testimonywhereof I affix niy signature on opposite sides of said sheave, Which is proin presence of two WitnessesA 5 vided on its opposite sideswith clutchinsur faces companionable with the'said opposbitelyn n NYILLIAM M' VULKIN rotating clutching devices, and, finally, ashift- Witnesses:

ing apparatus, substantially as shown, for JNO. K. HALLOCK,

throwing either of said oppositely-rotating ROBT. H. PORTER.