US92777A

US92777A - Improvement in saw-mills

Info

Publication number: US92777A
Authority: US
Publication date: 1869-07-20
Anticipated expiration: 1886-07-20

Description

' tinned, fittest stint mimic.

TIMOTHY BEAUDRY, OF LEVIS,.CANADA.

Letters Patent No. 92,777, dated July 20, 1869. v

IMPROVEMENT IN sewints.

My invention relates to, and consists inv a particular.

method of hanging and operating'any desirablenulnber of saws at one and the same time, without the use of the ordinary saw-gate; also, in 'a special arrangement of feeding-devices, whereby the logs are carried to, and the lumber from the saw, as will hereafter be more fully explained.

To'enable others skilled in the artto make and use my invention, I will proceed to describe. its construction and operation.

Figure 1 is a'longitudinal section of portion of the mill.

Figure 2 is a transverse section of the same.

Figure 3 is a plan view, andsection of the log-carnage.

Figure 4 is a section of the hexagonal drum, by which the log-carriage is moved.

Figure 5 is a side view of the buckle, by which the saw is attached to the cross-head.

Figure 6 is a back view of fig. 5.

Figure 7 is a plan view of the gauges or s w-guides. Figure 8 is a plan view of the upper slide and crosshead. I

Figure 9 is a front View of the upper cross-head.

Figure 10 is a plan view of buckle 0, showing a different method of attaching saws to the lower crosshead.

To the cross-head i the saws a are attached, by means of bucklesb, figs. 5 and 6. p

The lower gauge 9 is attached to the upper end of the slides h, and serves, in conjunction with the upper gauge 4, to guide and steady the saws when in operation.

Attached to the upper portion of the frame A, are two perpendicular hanging-posts,'to'which the metallic slides k are secured.

In these slides are formed dovetailed grooves, in which the slides j, which are attached to the gauge a, operate.

In the rear of these slides is a horizontal shaft, m, carrying 'pinions,-which operate upon a rack secured to theslides j.

Motion is given to the shaft m by means of the bevelledwheels a o, and hand-wheel p, for the purpose .of raising-or lowering the gauge '7', to adapt it to the size of the log.

A cross -head,. l, is attached to the upper end of the saws a, which reciprocates in the slides j:

To the upper end of these slides issecin'ed a horizontal bar, D, to which the gauge-support u fig. 14,

is attached.

The log is fed to the saw, and the lumber carried from it, by means of an endless-chain carriage, moving upon longitudinal ways B.

Motion is given to this carriage by means of revolving hexagonal drums x, to which motion is imparted by any'suitable gearing connected'with the feed-puly For the purposeof holding the log in position while being operated. upon by the saw, the sections 1: of the chain-carriage are hollowed, as shown in fig. 3.

These sectio'ns, in connection with the spiked pressure-rollers t 8, hold the log firmly in position.

Having thus fully described my invention,

\Vhat I claim, and desire to secure by Letters Patcut, is

1. The method herein described of operating a series or gang of saws, without the use of gates or devices for straining them.

2. The chain-carriage 'u, in combination with the pressure-rollers t and s, when constructed and arranged to operate substantially as described, and for the purpose specified. I

3. The buckle I), to which saws a are attached, in combination with the cross-head i and pitman c, ,when constructed to operate as described, and for the purpose specified.

4. The strengthening-rod 2!, attached to the bar D, in combination with the gauge 0*, when used as and for the purpose set forth.

Witnesses: T. BEAUDRY.

. G. TALBOTT, v

HENRYN. MYGATT.