|Publication number||US74692 A|
|Publication date||Feb 18, 1868|
|Publication number||US 74692 A, US 74692A, US-A-74692, US74692 A, US74692A|
|Inventors||P. It Is|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (5), Classifications (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
v i @@wwm PISTU'HEHNUBS PATENTE@ 74692 f 155181868 E. D. IVES, OF NEW HAVEN, CONNECTICUT.
Letters YPatent N'o. 74,692, dated FL'rLLarZ/IS, 1868.
IMPROVEMENT' Ill PIGTURRKNOBS.
@la tlgrtnle tentar tn in tigen trttets ateiit mit nuttig pitt nf tige sans.
TO ALL WHOM IT MAY CONCERN:
Be it known that I, E. D. IVES, of' New Haven, in the county ot' New Haven, and State of Connecticut, have invented a new Improvement :in the Manufacture of Picture-Knobs from glass; and I do hereby declare the following, when taken 1u connection with the accompanying drawings, and the letters of reference marked thereoin'to be a full, clear, andexact description of' the same, and which-said drawings constitute part of this Specification, and represent, in-w i Figure 1, a side view of the nail complete.
Figure 2, a side view of the head.
Figure 3, a side view of the nail detached.
Figure 4, annnder ,side view of the head; and, in
Figure 5, the head attached directly to the nail` or screw.
This invention' relates to an improvement in the manufacture of that class of nails and knobs such as are generally used for suspending pictures, and commonly-called picture-knobs or-nails; and the invention consists in the process of forming the head u pon the nail or socket, that is to say, tirst heating the socket, then attaching one end ot' a bar of glass, heated bythe blow-pipe into a semi-plastic state, causing the nail or socket to revolve, drawing theglass on to the socketor shank, and piling until a suicient quantity of glass has been attached to the shank or socket, then, by a mould of proper form, pressing the surface of the knob into' the desired shape, thus avoiding the necessity of melting the glass, and foi-ming a better surface and more secure attachment than has heretofore been donc.
In order to thc clear understanding ot' my improvement, I will proceed to describe thesarne as illustrated in the accompanying drawings.
I will rst describe the process of attaching a head directly to a screw, as seen in iig. 5. A screw, A, is first placed in a revolving' mandrel, and the tlamc from the blow-pipe caused to fall upon the head of the screw until the screw is heated to a bright red heat; then a bar of glass of any ldesired color or colors is placed in such proximity to thc dame as will heat the glass into asemi-plastie or flexible state; then 'the heated end of the bar is placed upon the hot head of' the screw, and the screw continuing to revolve winds and draws out'the glass, the heat continuing until the requisite quantity oi' glass has been wound upon the head; then, when still hot, a mould of thc form desired is applied and the surface of the head pressed into the shape desircd, as denoted in iig. 5, the under surface of the head presenting the appearance denoted in iig. 4, showing the manner in which. the glass has been wound upon thc screw.
For nails it is necessary that the head be detached. I therefore 'form the nail I3, as seen in iig. 3, the upper end being threaded, and, instead-ot' inserting the screw into the mandrel, I place a threaded socket, C, thereon, causing it to be heated to revolve and attach the glass thereto, as before described, the internal thread cf'the socket C 'corresponding to the thread on the head of' the nail. Then the two are attached together, as seen iu iig. l, and when it is desired-to drive the nail, remove thc head, and, when the nail has been driven, replace the head thereon.
I do ,not wish to he understood as broadly claim-ing a picture-nail constructed with a detachable head, as such are common and well known; but
What I do claim' as new and useful, and desire to secure by Letters Patent, s
1. Formingand attaching knobs of glass or similar material to screws or nails, substantially in the manner herein set forth. V
Z. 'Ihecombination of the threaded nail B and socket C, when the said socket has formed thereon a knob or head of glass or similar material, and when the said glass or similar material is formed and attached thereon, in the manner and by the process herein set forth. l
E. D. IVES.
JouN H. SHUMWAY, A. J. TIBBrrs
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