Improvements in and in the Manufacture of Photographic Printing Frames.
Year: 1888

page_text: Date of Application, 3rd Nov., 1888
Complete Specification Left, 3rd Aug., 1889-Accepted, 21st Sept.. 1889
PROVISIONAL SPECIFICATION.
Improvements in and in the Manufacture of Photographic
Printing Frames.
I CHARLES TOMLINSON of the Soho Iron Works, Oldham Road, Rochdale, in the
County of Lancaster, machine maker, do hereby declare the nature of this Invention
to be as follows:-
My Invention relates to the photographic appliances well known under the desig-
nation of printing frames and has for its object to improve the construction of such
frames and at the same time to facilitate their manufacture. An ordinary printing
frame consists in so far as the frame proper is concerned of two wood side pieces
connected together by two shorter and thinner pieces which I will term end pieces.
The side pieces are rebated upon the edges which face each other when the frame is
put together the end pieces being equal in thickness to the ribs produced upon the
side pieces by the rebating. The four pieces are usually or sometimes fitted together
so as to form a slot and tenon joint and the front inner edges of the frame are subse-
quently beveled. In some cases the pieces have been beveled before the frame has
been put together. According to my invention I cut the side pieces from strips
which have been beveled and rebated and the end pieces from strips which have been
beveled. I subject the side pieces to the action of cutters which simultaneously
remove portions from each end so as to form a rebate equal to the thickness of an
end piece the inner face of each rebate being shaped to fit the beveled edge of an
end piece. The distance apart of the cutter spindles determines the length of the
aperture in the frame. When the frame is glued together the beveled edges make a
mitre connection at each corner. The corner joints are further secured by means of
nails, pins, screws, or rivets. The end pieces are not so much weakened as in the
ordinary construction herein before described and the cost of production is lessened.
Dated this and den at Navambon 108e
DUTTON & FULTON,
1, St. James Square, Manchester, Agents.
COMPLETE SPECIFICATION.
Improvements in and in the Manufacture of Photographic
Printing Frames.
I CHARLES TOMLINSON of the Soho Iron Works, Oldham Road, Rochdale, in
the County of Lancaster, machine maker, do hereby declare the nature of this Inven-
tion and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement and accompanying drawings :-
---
My Invention relates to the photographic appliances well known under the desig-
nation of printing frames and has for its object to improve the construction of such
frames and at the same time to facilitate their manufacture. An ordinary printing
frame consists in so far as the frame proper is concerned of two wood side pieces
connected together by two shorter and thinner pieces which I will term end pieces.
The side pieces are rebated upon the edges which face each other when the frame is
put together the end pieces being equal in thickness to the ribs produced upon the
side pieces by the rebating. The four pieces are usually or sometimes fitted together
so as to form a slot and tenon joint and the front inner edges of the frame are subse-
quently beveled. In some cases the pieces have been beveled before the frame has
been put together. According to my invention I cut the side pieces from strips
which have been beveled and rebated and the end pieces from strips which have

page_text: been beveled. I subject the side pieces to the action of cutters which simul-
taneously remove portions from each end so as to form a rebate equal to the thickness
of an end piece the inner face of each rebate being shaped to fit the beveled edge of
an end piece. The distance apart of the cutter spindles determines the length of the
aperture in the frame. When the frame is glued together the beveled edges make a
mitre connection at each corner.
In order that the nature of my Invention may be fully understood I have attached
hereunto a sheet of drawings to which I will make reference in this place. In the
said drawings Fig. 1 represents the section of a wood strip which I cut up to form
the side members of the frame and Fig. 2 represents the section of the strip which
I use for the end cross pieces of the frame. It will be understood that the propor-
tions of these sections may be varied to suit different sizes of frames or as may be
considered to be desirable. The strip a having been cut into pieces of the required
length each piece is cut at each end in the manner indicated by Figs. 3 and 4 the
cutters being adapted to form a rebate at each end of the piece corresponding in form
and size to the section of Fig. 2. The strips represented by Fig. 2 are simply cut
into pieces of the required length. When the frame is put together the cross pieces b
fit into the rebates in the ends of the sido pieces a without any alteration of cross
section in any part as indicated in Fig. 5 the beveled inner edges showing a mitre
connection at each corner as indicated in Fig. 6. The corner joints are further
secured by means of nails pins screws or rivets. The end pieces are not so much
weakened as in the ordinary construction herein before described and the cost of
production is lessened.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
(1) The photographic printing frame composed of parts formed and put together
substantially as set forth and indicated.
(2) In a photographic printing frame the two side members a cut at each end as
indicated in Figs. 3 and 1 connected together by means of the end cross pieces b of
uniform section from end to end substantially as set forth and indicated.
Dated this 2nd of August 1889.
DUTTON & FULTON,
1, St. James Square, Manchester, Agents.