US1421204A

US1421204A - Woodworking machinery

Info

Publication number: US1421204A
Application number: US394987A
Authority: US
Inventors: Fritz Louis
Original assignee: Individual
Current assignee: Individual
Priority date: 1920-07-09
Filing date: 1920-07-09
Publication date: 1922-06-27
Anticipated expiration: 1939-06-27

Description

L. FRITZ.

WOODWORKING MACHINERY.

APPLICATION HLED lULY 9,1920.

1,421,204. Patented Jun 27, 1922;

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Qwpentoz r L. FRITZ. WOODWORKING MACHINERY APPLICATION LED JULY 9,1920.

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LOUIS FRITZ, or IYIEMlI-IIS, rnlvnnssnn.

WOODWOBKING MACHINERY.

Application filed July 9,

T 0 all Q0]! 0m it may 007i 061% Be it known that I, LOUIS FRITZ, a citizen of the United States, and a resident of Memphis, in the county of Shelby and State of Tennessee. have invented certain new and useful Improvements in lVoodworking Machinery; and I do hereby declare the following to be a full, clear. and eva ct description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7

This invention relates to improvements in woodworking machinery and more particularly to a mill for sawing and planing timber,-one object of the invention being to provide a mill which will operate to saw a log progressively so that an entire log shall be sawed into boards by subjecting said 10;; successively to the action of two or more batteries of saws, and also to plane the edges of the sawed boards. v I

A further object is to so construct a saw mill that a log may be subjected to one battery of band saws to sever a plurality of boards from two sides of the log; so that, after giving the log a quarter turn on the carrier, the said log may be subjected to the action of another battery of band saws to sever the remaining part of the log into boards, and so that the conveyor will operate continuously to move the log progressively through the mill.

lVith these and other objects in view, the invention consists in certain novel features of construction and combinations of parts as hereinafter set forth and pointed out in the claims.

In the accompanying drawings; Figure 1 is a plan view; Figure 2 is a view illustrating the first battery of saws and planers; Figure 3 is a view showing the second battery of saws and planers; Figure 4 is a detail view of the planers, and Figure 5 is a plan view showing the second battery of saws and planers.

In the drawings, I have represented two batteries A and B of saws suitably spaced apart and an endless conveyor C is provided to move a log first past one battery of saws and (after the log has been given a turn) to move it past the other battery of saws.

In constructing the battery, A, of saws, I provide suitable framework. indicated at 1 in which the journals of upper stepped cone pulley 2, 3 and lower stepped cone pulleys 2. 3 are suitably mounted. Passing over steps of the pulleys.

Specification of Letters latent. @atentgd Jung 27,1922,

1920. Serial No. 394,987.

' the upper and lower stepped pulleys 2 and 2? is a series of band saws 4 varying in length aocorc'lingto the distance apart of the steps of the respective pulleys and spaced apart distances equal to the "depth of the For instance, if the boards one inch thick are "desired, the band saws passing over the pulleys 2, '2 will be spaced one inch apart, and if two-inch boards be desired certain of the saws may be removed. The cone pulleys be con structed with a greater or less number of steps than shown in the drawing for the accommodation of more or less saws. Band saws '5 are suitably arranged to pass over the stepped cone pulleys 3 3, and the two series of saws 4 and 5 constituting the battery A of saws, are spaced apart to accommodate the conveyor C. This conveyor 'co'r'n prises a series of endless cables 6 passing over a number of sets of pulleys on shafts 6 carried by suitable bracket 6 the outer pulleys Tot each set being somewhat larger than the intermediate pulleys 8 so that a cradle will be formed to receive the log.

At a distance in advance of the battery A of saws, somewhat greater than the average length of the logs to be sawed, the battery B of saws is located. In constructing this battery of saws, I provide suitable framework 9 having at its top and bottom, bearings 10 for the journals of

drums

11 and 12. A plurality of band saws 13, arranged side by side, pass over these drums and these saws are so proportioned that they are capable of being forced inwardly. Cone stepped idlers 14 are mounted in suitable bearings on the frame-work 9 so as to be disposed somewhat below the plane of the upper drum 11 and similar cone stepped idlers 15 are mounted in suitable bearings on the framework so as to be disposed somewhat above the plane of the lower drum 12. The stepped idlers 14 and 15 are so disposed that their steps will engage the saws 13 successively so that the active portions of the saws will be disposed equal distances apart and thus be adapted to cut the log into boards of equal thlckness.

When a log has been subjected to the action of the battery A of saws to cut slabs from two sides and to cut two or more boards, the log will have two flat sides and two slab ends, so that the partially out log will be approximately rectangular in shape. The log will now be given a quarter turn, either manually or with the use of any suitward, the turned log will lie-presented to.

the saws of the battery B (the cables of the conveyor passing between the saws) and these saws will remove the slab ends and sever the log into boards of equal thickness.

Between the batteries A and B 01. saws,

planers

16, 1G and 17, 17 are located and adjustably secured as at 18 to the framework. Each of these planers is made in the form of a stepped cone having suitable cutters and said stepped cone planers are so proportioned and disposed that they will operate to plane the up er and lower edges of the boards severed y the battery A of saws. Each stepped planer will be provided with suitable means indicated at 19 for adjusting the same relatively to the edges of the boards to be planed. i

Pairs of

planers

20, and 21 may be located in advance of the batteryB of saws for the purpose of planing the upper and lower edges of the boards severed by these saws, and the construction and operation of the

planers

20 and 21 are the same as previously descrzi bed in connection with the

planers

16, 1 i i All of the saw pulleys and drums as well as the planers and the conveyor cables may be operated by suitable belting and gearing receiving motion from a single sourceof power.

With the use of my improvements, 1 am enabled quickly to saw a log completely into boards progressively as the log is carried past the two batteries oi? saws by means of the endless conveyor cables, thus obviating the necessity "for moving the log back and forth, and the upper and lower edges of boards will. be planed. I 7

Various changes might be made in the details of construction of my invention with out departing from the spirit thereo'l or limiting its scope and hence I do not wish: a

. to restrict myself to the precise details herein'set forth.

Having fully described my invention what I claim as new and desire to secure by LettersPatent, is

In saw mill. apparatus, the combination LOUIS FRITZ.

Witnesses I W. ST ART Hones,

R. S. FERGUSON.