Corn, rat's Improvement in m a k i n g Glue. 87

ehar~in~ tri~er, in the same manner, in every respect, as_ the~¢~¢k ~!ih~ C~mm~o~n gun lock,by the discharging tri'gger'0perafing~6~£e se/i~:, or dog, which, by pressure, is disengaged from the n0 t~ 'hl ti~ c/irking trigger, rhe cocking trigger may be either within Or f0r: #ard of the trigger guard, or playing through a slit cut for the pur- pose in the forward part of the guard. The same principle is irt. ~ended to be applied to-pistols anil to double barrelled ~uns.

; ~ , g u a r d . B, trigger plate. C, main spring. D, feather spring. E~.cockin~ trigger. F, discharging trigger. G, sear, or dog. H~ bill~ or cone. I, tube Much screws into the touch role.

5~b~ea}ion of a patent a¢br an improvement in the art oj' making Glue, b~j evaporating the water commonly called the foot water, or

i~i~t[te liquor after boiling the bones of all kinds of animals, to a pro2 ~i:~e~;cOnslstence ..... for cuttln ~o', dr y in g, and makin ~o. into Glue, b y means i;~!~Of a double floored evapo~'ating basin. Granted to Pr.TEa Coor~R~ ~City of New Yo@, ,/lpril ~9th, l SSO. ~ . "~!

i i:i~rhS imp~'ovement consists.in having an ordinary furnaee.~mlde d!~!br, ick- work; fi'om this runs a horizontal chimne)~, or flueohal.f~tl~u width, and: running the whole length, on which it is intended)i~;e~ s*riiet, the evaporating basin, it is then returned on. the other,~iilB baizR to the. furnace where the flue terminates in a perpendicular ~ihnney.;~..:/kcrossthese tWO flues are to be laid at proper distances~ ii:61!~bars~of about an inch in breadth, to support t he lower basin; u ~ t h e s e i s laid one extended sheet of lead, or other metallic sub- s~n~e~ :and. upon the edge of tills is placed a wooden curb from six to t:W,e~v~Snet~es deep. To the outside of this wooden curb the sheet of.lead isi:to:benailed all round, and so as tobe water tight.

Upon t i~e bottom of this basin are laid three m" four longitudinal s~ril~s of boards about two or three inches in width, and terminating- ~ o u t a fi)ot short of the inside of the curb at the end furthermost~ t'~m the furnace. Across these, alld about an inch, or an inch and

88 Crdaa~'s Improvement in the Ingrain Carpet Zoom.

a half apart, are slats of about an inch thick) and an inch high, and nailed to the longitudinal strips on which t~ey rest. '~

A t t h e point where the loi)gltudlnal strips terminate, at thdlfar end of the curb, and about one tbot from it, is a piece of board g(~{~ag across the basin and gi~ooved to the inside of the wooden Curb afdb~ Said, this board is to be constructed about half an inch higher than the surrounding curb, arid about two incl{es less it{:depth. ~ i "

Upon these slats is another sheet of lead extended, or other me. ~tallie substance, the edge of which is to be bent up, and nailec[?~io the inside of the curb and the board aforesaid,and So as to be~m - ~pervioUs to the water. - . . . . . . .

This corn is now to b, tY.ond the bc he two bas

and then th from the bo fire kept u]~ ~obe' t~aken cut and sp~

right, is th and the application of it to the purposes of making glue, de'scribed as aforesaid, whereby the foot water, or liquor after boiling the bones of all kinds of animals, is evaporated into a proper consistence to preserve it, and make it into glue. PETER COOPER,

Spedficat{on of a patent Jbr an improvement in that part of th~<Jnl grain Carpet Loom, which is called the Engine. Granted to. Jo -

. . . . . : : - ~ . } . T U :

SIAn R. C~artK, South Coventry, Tolland county, Connecticut, May 7th, 1850. . ,:.~ "

Tars improvement consists in substituting a rotary sheet: of ~ S i ~ - board, parchment, painted canvass, or any other suitable Substarl~e, perfm'ated with holes ill such a manner as to form the figure teciuire~d, in lieu of the barrel or cylinder with wire cogs, or stanles, set iri i t (somewhat resembhng the barrel of a hand organ) which is commonly used; anda)so as a substitute for, and an improvement on '*t}ie J a y