US298470A - dimohd - Google Patents

Description

(N0 Mddel.)

J. A, HOUSE & O.'H-. D IMOND. DEVICE FOR OLAMPING PATTERNS (IN GOODS.

Patented May 1 s 1884.

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llNiTE ATENT Erica,

JAMES ALFORD HOUSE AND CHARLES H. DIMOND, or BRIDGEPORT, conn.

DEVICE FOR CLAMPING PATTERNS ON GOODS.

SPECIFICATION forming part of Letters Patent No. 298,470, dated May 13, 1884.

Application filed February 1854. (No model.)

To all whom it may concern.-

Be it known that we, JAMES ALFORD HOUSE and CHARLES H. DIMOND, citizens of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Devices for Clamping Patterns to Goods; and we do hereby declare the following to be a full, clear, and exact description of theinvention, such as willenable others skilled in the art to which it appertains to make and use the same.

Our invention relates to certain novel and useful improvements in devices for clamping and securing patterns onto goods, and has for its object to operate the clamping-bar by the direct manipulation of the latter, thereby doing away with independent levers and other similar means for accomplishing this purpose, and, furthermore, to do away with a presserfoot, and also to provide such a clamping device as shall have a universal and ready adjustment, while at the same time it is simple and economical in construction; and with these ends in view our invention consists in the details of construct-ion and combination ofelements hereinafter fully and in detail explained, and then specifically designated by the claims.

In order that those skilled in the art to which our invention appertains may more fully understand the same, we willproceed to describe its construction and operation, referring by letter to the accompanying drawings, forming a part of this specification, in which- Figure 1 is a perspective showing a pattern clamped onto goods by our improvement, and Fig. 2 a central vertical longitudinal section.

Similar letters denote like parts in both figures of the drawings.

A is a hollow rod having an inwardly-projecting flange or shoulder, B.

G is a coil-spring resting on said flange, and immediately on this spring is a nut, D. This nut is adapted to slide freely within the rod, and is provided with ratchetteeth E, which extend laterally within an elongated slot, F, in said rod for the purpose presently explained, so that it will be readily understood that when said nut is depressed the action of the spring will tend to throw it back to its normal position,

G is the clamping-bar,thread ed at its upper extremity and extended within the rod from the bottom thereof, so as to engage with the nut D. By running the bar up within the nut the former is raised from the pattern, and vice versa.

H is an ordinary spring-pawl pivoted to a collet, I, secured on the rod, and whose normal position is in engagement with the ratchet-teeth in the nut.

Instead of turning the bar around until the action of its thread within the nut brings the lower extremity of said bar against the pattern, we are enabled to accomplish the same result in less time by simply pulling the bar down, thereby depressing the nut against the spring. The pawl H will engage with the ratchet-teeth on the nut and prevent the bar from flying back after it has been brought down. When it is desired to remove the pattern from the goods, the bar may either be run back within the nut, or the heel end of the pawl may be depressed and the latter thrown out of engage mentwith the ratchet-teeth, and thereby cause the spring to act against the nut and throw the bar up. The rod is pivoted at its upper extremity to a block or-frame, J, arranged to travel on any suitable track, K, the relation between said block and rod being such that the latter is permitted to swing freely in a direction transverse to the movement of the block for the obvious purpose of bringing the clampingbar into operation at any point of the cuttingtable. 4

The operation of our improvement is as follows: The pattern is placed upon the goods, the latter being arranged in as many thicknesses as desired for the purpose of cutting duplicate patterns. The clamping-bar is now brought into the required position over the pattern and brought down firmly upon the latter, as hereinbei'ore set forth. If the lower extremity of the bar is considerably above the level of the pattern, (as frequently happens whenever the bar, having been raised to accommodate many thicknesses of goods, has been left in that position,) instead of running the bar down onto the pattern we simply pull 100 it out and giveit several turns; but if the lower extremity of the bar is close to the pattern,then it may not be desirable to pull the bar down, and it is therefore given afew turns, and there may swing it around to manipulate the cuttingknife more readily.

\Ve do not wish to confine ourselves to the exact method shown of pivoting the rod to the traveling block, as a ball-and-socket joint may be used, or any other similar and suitable means employed in this connection.

What we claim as new, and desire to secureby Letters Patent, is- I 1. A device for clamping patterns onto goods, consisting of a rod adapted to be adjusted to any Vertical plane, and having interiorly-arranged therein a threaded clamping-bar engaging with a nut within said rod, substantially as set forth.

2. A device for clamping patterns to goods, consisting of a rod pivotally attached to a traveling block or frame, and having interior] y arranged therein a threaded clamping-bar adapted to travelina nut,substantially as described.

3. In a device for clamping patterns to goods, a rod pivotally attached to a traveling block .or frame, and having interiorly arranged therein a nut provided with ratchet-teeth and supported in an elevated position by a spring, in combination with a threaded clamping-bar adapted to travel in said nut, and a pawl attached to said rod and adapted to engage with said teeth and hold the bar against upward movement, substantially as shown and described.

4. In a device for clamping patterns to goods, the threaded clamping-bar adapted to engage with an adjustable nut arranged interior of a rod capable of being adjusted to any vertical plane,subst-antially as set forth and described.

5. The threaded clamping-bar adapted to engage with a nut in the rod, in combination with means independent of the screw action of the bar for enabling thelatter to be brought down and held upon the pattern, and returning said bar to its normal position, substantially as specified.

6. The rod A, having shoulder B and elongated slot F, and with nut D and coil-spring 0, arranged interiorly therein, in combination with the threaded clamping-bar G, sliding block .T, and pawl H, attached to said rod and engaging with teeth in said pawl, substantial] y as and for the purpose set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

JAMES ALFORD HOUSE. CHARLES H. DIMOND.

Witnesses:

O. S. LEET, S. S. WILLIAMSON.

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