USRE5156E - Improvement in the manufacture of rubber-coated harness-trimmings - Google Patents

Description

A. ALBRIGHT.

Manufactucture offiubber-Coatd Harness-Trimmings.

N0 5156 Reissued N0v.26,1872.

gutta percha,

and finishing in the dies.

other impurities,

should be of a consistence UNITED STATES PATENT omen Annnnw ALBRIGHT, or NEWARK, New messy.

IMPROVEMENT-IN THE MANuFAcTuRso RUBBER-COATED iiAs'urss -mum uesj.

. Specification forming part of Letters Patent do. 123,603, dated February 13, 1872; antedated JazinaryiLIlBIJ';

. reissue No. 5,166, dated Norember 26, 1e72,

D yisro i B. a

Newark, New Jersey, have inventedan im- 1 proved process for manufacturing"Harness Trimmings covered withvnlcanized rubber, 'or other known vuleani zable.

gum, of which the following is a specification:

My invention consists of an improved process'for manufacturing rubber-coated harnesstrimmirigs. There are three principal operations which form the combined process which is the subject-matter of this specification:

First, the preparation and application of the coating to the metal; second,-the vulcanization ot' the coating; third, the'compressing The metallic ring, buckle, terret, or other article to be coated is first. carefully cleaned by washin g and drying until freefrom dust or' which might prevent a ien feet adhesion of the coating; This coating may .be of rubber, gutta-percha, or other known vul- V canizable gum properly preparcd'for vulcanization. i I

I have attained the best results with the following process: I first take a good quality of the rubber and sulphur composition commonly used, consisting of about two parts of rubber to one part of sulphur. This composition of stiff dough, paste may be thinner. I then apply a thin coatingot' the coin1,) osition-'-wl1ich is easiest done when rolled into sheets of uniform thickness-to the article, working and pressing itv firmly to the metal by the hand or otherwise.

The article thus eoated'with the vulcanizable gum is then placed in a mold of the proper shape, so as to keep the coating in due thickness and proportion; or the articles maybe packed in stone-dust or plaster, as usual, with about equal to that although the composition orv other. rubber goods. The articles in theirmolds or packing are then placed inthe vulcanigingoven, and remain in the usualrulcanizing temperature from six to ten hours, until sufiiciently hardened. After being'thns vulcanized the articles are ready for theaction of the dies;

The dies to be used in this process should be a very little smaller than the irtic'le to be pressed, so that they may thoroughly compress and density the coating upon the. metal. They should have cutting-edges-s'o'as to shearotf the superfluous-coating, and should be providdies are'more fully describedin Division A of this specification. The dies, now being ready, are slightly heated, and the. vulcanized articles-which it is' better to have heatedare put one at a time-in the lower die, while the upper die is pressed or dropped down upon it with great pressure coating with equal pressure in all directions .tough, and susceptible to high' polish, and is were not so pressed.

erable polish, thus her in tumbling]? finishing, and polishing.

used in my combined process. 1

What I claim is-- The herein descri manufacturingmetallicharness-trimmingscov-,

ered with rubber, gntta-percha, or otherknown vulcanizable gums. r 4 ANDREW ALBRIGHT.

Witnesses: l

J. G. CLAYTON,

T. B. BEEOHER.

ed with suitable indentations pr'i'en'gravin g so' as to produce the desired ornamentation. Such As the'dies act uponthe the coating is made homogeneous, dense, hard,

renderedmore durable and better than if it The dies'at'the same timeout ofi' the superfluous coating, applyor; namentation, if des1red,' and impart a consid doing away with much la- Various vulcanizable"compositions maybe bed combined process of

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