US88203A - Improvement in self-registering lumber-measure - Google Patents

Description

da in 3 o dmail have @mail DEXTER E. PEASE AND GEORGE RICHARDS, OF RICHLAND CENTRE,

WISCONSIN.

Letters Patent No. 88,203, (lated March 23, 1869.

ers Patent and making part of the same.

To all whom it may concern:

Be it known that we, DEXTER E. Pnasn and GEORGE RICHARDS, of Richland Centre, in the county of Riehland, and in the State of W'isconsin, have invented certain new and useful Improvements in Lumber-Measure and do hereby declare that the following is a full, clear, and exaotdescription thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of our invention consists in the construction and arrangement of a device by which the number of square feet iu different lengths of timber can be oomputed at one and the saine time.

In order to enable others skilled in the art to which our invention appertains, to make and use the same, we will now proceed to describe its construction and operation, referring to the annexed drawings, vwhich forni,

a part of this specification, and in which- Figure l is a side view;

Figure 2, a bottom view;

Figure 3, a top view;

Figure 4, a bottom view, showing a different arrangement land v Figure 5, a side view of the same.

A represents the handle, to the end of which is pivoted a disk, B. Y

This disk is grooved, on its bottom, or under side, with a series of grooves, marked respectively from eight to twenty, according to the length of the timber which is to be measured. These grooves are all circular, and have a common centre, namely the pivot of the disk; and the face of the disk is provided with a series of circles, corresponding with the grooves on the bottom side.

Each of these circles is divided into as many equal partsas the corresponding groove is marked.

The outer periphery of the disk B, which is exactly one foot, is divided into twelve equal parts, each thus being an inch in length.

All the circles on the face of the disk are so divided, that the last number oi' each will come at the point indicated by a straight line drawn from the centre of the disk to the point where the ligure 1L', at the periphery, is placed.

To the handle A, is a stationary finger, or indicator,

C, secured, which points along the face of the disk B, for a purpose that will be hereinafter set forth.

To the handle A, is also attached an adjustable springarm, D, which extends along the same and under the` disk B; and to the end of said spring, under the disk, is pivoted a small wheel, E, which, with the spring-arm D, is so arranged, that the wheel can be placed in any ofthe circular grooves on the under side ofthe disk.

A cog-wheel, F, which has sixty eogs, is also pivoted to the spring-arm D, in such a manuel', that a; pin, a, which is placed on the wheel E, willturn the cog-wheel F one cog at each revolution it makes.

The wheel E is divided in ten equal parts, and the i cogfwhe'el F is marked so that the cogs can be easily counted.

rllhe operation of the device is as follows:

Set the disk B so that the twelvednoh line shall come directly under the pointer, or index C. The small wheel E is to be set so that the small pin [t shall have just passed out o f the cog on the'oog-wheel F, which it turns; and this latter so set that the cog No. 60 shall come opposite a pin, b, on the spring-arm D, to which the wheels, are attached. It' it is desired to measure eight-feet lumber, the small wheel E is placed in the smallest groove,

nu rked 8. Take by the handle and put the large wheel, or disk B, so that the pointer, or index C shall be at the edge of the board. Then bear on it suiicieutly hard to turn the wheel, and run it across the board till the index shall come to the other edge, and in the saine lmanner with the next.

It will be seen that in so turning the disk B, the smaller wheel E is turned by the friction, and at each revolution of the saine, the pin a turns the cog-wheel F the distance of one cog.

After measuring the eight-feet boards, and tis desired to measure, in addition, boards, say, fourteen feet in length, the wheel E is raised ont of the groove marked 8, and placed in the one marked 14, and then go on as before.4V And so in the case with any other length.,

Vhen'done, to find the number of square feet measured, annex a cipher to the number of the cog opposite the pin h, on the spring, to which add the number of feet indicated by the board-measure on face of the disk. For example, if cog 42is at the pin, or point l), that indicates four hundred `and twenty square feet, by annexing a cipher; and if the index C is at l0, 0n the periphery of the wheel B, and the length of the board last measured is twelve feet, look at the number on circle 12, corresponding with l0 on the periphery, which is also 10, then add that to the four hundred and twenty,

which makes four hundred and thirty square feet of lumber measured.

Instead of havinggrooves on the under side oi' the disk B, we may provide it with a Series of circular tianges, as shown in tigs. 4 and 5, where the different parts are marked, respectively, A', B', D, and E.

Having thus described the construction and operation of' our lumber-measure, we will now briefly state the principle| upon which the same is constructed.

We take the friction-wheel E, running in groove marked 10, upon which we base our calculations. The diameter of both this friction-wheel and the groove marked l0, is one and one-half inch, so that at each revolution/df the measuring-wheel B, with the friction-wheel in said groove, gives the friction-wheel one revolution, which moves the-.indeX-wheel F one cog, denoting ten square feet of lumber measured. Two revolutions would give two cogs, or twenty square feet.

Now, the ratio of the diameters of the grooves, or

`projections, for each additional foot in length of the the groove which indicated the ten feet.

lumber to be measured, above ten, is fteeu one-hun dredths of an inch greater than the groove marked l0, which we have taken as a standard. So that, for

eleven feet, a groove one and sixty-five one-hundredths of an inch in diameter would be required; for twelve feet in length, a circle, or groove of oueand eighty onehundredths of an inch in diameter; thirteen feet, one and ninety-five one-hundredths of au inch in diameter; fourteen feet, two and ten one-hundredths of an inch; and so on up to twenty feet in length, when the diameter should be three inches, or twice the diameter of For shorter lengths than teu, the grooves should be correspondingly less in size.

The grooves which should be marked by odd` uumbers, We did not deem it necessary to show, as what is shown and described, fully illustrates the principle.

The wheel E, which, as above described, is turned by friction, may be provided with cogs on its edge, for turnmg.

The wheel, or disk B, may belprovided, on its uuder side, with a pin, c, arranged, in connection with a spring, d, on the handle, in such a manuel' that every time the indicator C points-at N o. 12, on the disk, it will give notice to the operator.

Having thus fully described our invention,

What we claim as new, and desire to secure by Letters Patent, is-

i The arrangement of the handle'A, disk B, spring- 'arm D, 'iction-wheel E, and index-wheel F, all constructed as described, and operating substantially as arid for the purposes herein set forth.

In testimony that we claim the foregoing, we have hereunto set our hands, this 31st day of August, 1868.

DEXTER E. PEASE. GEO. RICHARDS. Witnesses:

J AMES H. MGPHEETEBS, M. V. DUs'rlN.

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