Improvements in Photographic "Sheaths" or Carriers
Year: 1890

page_text: Date of Application, 12th Dec., 1890
Complete Specification Left, 14th Sept., 1891-Accepted, 12th Dec., 1891
PROVISIONAL SPECIFICATION.
"
Improvements in Photographic "Sheaths" or Carriers."
We ARTHUR SAMUEL NEWMAN of 71 Farringdon Road London in the County
of Middlesex Electrician and ARTHUR LEWIS ADAMS of 81 Aldersgate Street in
the City of London, Manufacturer of Photographic Apparatus, do hereby declare
the nature of this invention to be as follows:
:-
This invention relates to the carriers or sheaths used for holding and protecting
the plates films or other surfaces for photographic purposes both before during
and after exposure and my present improvements will be found especially advan-
tageous for use with "automatic" cameras and with changing boxes of all kinds.
For this purpose we arrange and construct a photographic "sheath
CE carrier" as follows:-
.or
The top and bottom edges are turned over so as to embrace and hold the top and
bottom of the plate etcetera and at each end neither edge thereof is turned up
but has a set-back" or swelling on its back formed thereon or therein in such
a manner that it projects beyond the plane of the back of the sheath and
therefore the next plate etcetera behind same is thereby prevented from elsewhere
coming in contact with such sheath except at the extreme edge of each end.
If desired the "set-back" may be formed in or on the top and bottom and the
two sides have their edges turned over thus arranging the sheath vice versa.
The sheath or carrier may be made of very thin sheet metal or of any other
suitable material or substance and in place of the aforesaid "set-back" being
formed out of the body of the sheath it may be formed by attaching a separate
piece the same effect being obtained and having the great advantage of having
each side (or top and bottom as the case may be) open and thus allowing easy
withdrawal or insertion of the plate etcetera and also our present invention has
this further advantage that it can thus be made very light in weight while at
the same time having great strength by reason of the two edges turned over in
front and the "set-back" or swelling on the back.
We further wish to remark that in some cases the "set-back" or swellings may
also be formed on the back of the sheath along the same edges as the turned
over edges and the "set-back" or swellings on the two open sides dispensed with
or such "set-back or swellings may be used on all four edges if desired.
"
Dated this 12th day of December 1890.
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Patentee."
COMPLETE SPECIFICATION.
66
Improvements in Photographic "Sheaths” or Carriers."
We ARTHUR SAMUEL NEWMAN of 71 Farringdon Road London in the County
of Middlesex Electrician and ARTHUR LEWIS ADAMS of 81 Aldersgate Street
in the City of London Manufacturer of Photographic Apparatus do hereby
declare the nature of this invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
This invention relates to the carriers or sheaths used for holding and protecting

page_text: the plates films or other surfaces for photographic purposes both before during and
after exposure and our present improvements will be found especially advantageous
for use with "automatic" cameras and with changing boxes of all kinds.
For this purpose we arrange and construct a photographic sheath or carrier as
follows-reference being had to the accompanying sheet of drawings which serve
to illustrate our present invention viz. :-
Figure 1 is a view of the front of our improved "sheath "-that is the side on
which the sensitive plate or film is carried.
Figure 2 is a reverse view of the "sheath."
Figure 3. is a section on line 1-1 Figure 1.
Figure 4 is a local section on line 2-2 (Figure 1) on an enlarged scale and
having the material folded over as at 6' to give additional strength.
Figure 5 is a local section on line 3-3 (Figure 1) on an enlarged scale.
Similar letters of reference indicate corresponding parts throughout.
a is the front side and b is the reverse side of the body of our improved sheath or
carrier *.
The top and bottom edges a¹ are turned over so as to embrace and hold the top
and bottom of the plate etcetera and at each end neither edge thereof is turned up
but has a "set-back" or swelling c on its back 6 formed thereon or therein in such
a manner that it projects beyond the plane of the back b of the sheath x and
therefore the next plate etcetera behind same is thereby prevented from elsewhere
coming in contact with such sheath except at the extreme edge of each end where
it comes in contact with c.
If desired the "set-back" may be formed in or on the top and bottom and the
two sides a have their edges turned over thus arranging the sheath vice versa.
The sheath or carrier a may be made of very thin sheet metal or of any other
suitable material or substance and in place of the aforesaid "set-back" c being
formed out of the body of the sheath it may be formed by attaching a separate
piece the same effect being obtained.
It will be found of great advantage having each side (or top and bottom as the
case may be) open and thus allowing easy withdrawal or insertion of the plate
etcetera and also our present invention has this further advantage that it can thus
be made very light in weight while at the same time having great strength by
reason of the two edges a' turned over in front and the "set-back" or swelling c on
the back b.
We further wish to remark that in some cases the "set-back" or swelling c may
also be formed on the back b of the sheath x along the same edges as the turned
over edges a¹ and the "set back" or swellings on the two open sides dispensed with
or such "set-back" or swellings c may be used on all four edges of each sheath or
carrier as desired.
In place of the set back or swellings being arranged lengthwise as shown at c in
the drawings similar effect may be produced by a series of smaller swellings-
instead of one long set back or swelling as illustrated.
A further advantage obtained is that the film plate or sensitive surface held in
our improved sheath or carrier is brought right up to accurately register or focus
in every case.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1. A photographic sheath or carrier having a swelling or set back or raised
surface or surfaces on the back thereof and near to the opposite edges on two
sides or it may be-on three or four sides so as to keep the back of one sheath
or carrier from injuriously coming in contact with the sensitive surface plate or
film in the next sheath behind same substantially in the manner and for the
purposes herein before set forth.

page_text: 2. We claim the set back or swellings c on the back surface of a photographic
sheath or carrier substantially as and for the purposes herein before described
and illustrated in the drawings hereunto annexed.
Dated this 14th day of September 1891.
TONGUE & BIRKBECK,
Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.