Improvements in Machines for Calendering or Burnishing Photographic Prints and the like.
Year: 1896

page_text: Date of Application, 20th Jan., 1896
Complete Specification Left, 20th Oct., 1896-Accepted, 16th Jan., 1897
PROVISIONAL SPECIFICATION.
Improvements in Machines for Calendering or Burnishing
Photographic Prints and the like.
I WILLEY PRATT of 21 Milton Place Halifax in the County of York,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to improvements in machines for calendering or burnishing
photographic prints and the like and has for its object to provide simple and
efficient means whereby the rollers of such machines may be easily and quickly
adjusted.
According to this my invention I mount the top roller in suitable bearings
formed in the standards.
Underneath the lower roller is a shaft supported at each end by the standards
and running parallel with the said roller at a short distance therefrom.
This shaft is provided near each end with a cam or scroll and each of the
adjustable blocks or bearings of the lower roller is formed with a projection which
bears upon or engages with the said cams or scrolls so that upon turning the said
shaft by means of a hand wheel or other suitable device at one end the lower rollér
is raised nearer to or further from the upper or fixed roller. The cams or scrolls
being similar in shape and position to each other always maintain the lower roller
in a parallel or level position with respect to the upper roller.
I prefer to form the said standards with recesses within which work the cams or
scrolls.
I may in some cases arrange the apparatus so as to operate the upper instead of
the lower roller by means of the shifting cams or scrolls aforesaid.
As my improvements are capable of some slight modification without departing
from the principle of the invention I do not restrict myself to the precise form or
placement of the parts thereof.
Dated this 20th day of January 1896.
J. B. FLEURET,
5 Hatton Garden, London, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machines for Calendering or Burnishing
Photographic Prints and the like.
1 WILLEY PRATT of 21 Milton Place, Halifax in the County of Yorkshire,
Mechanical Engineer 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 improvements in machines for calendering or burnishing
photographic prints in which two horizontal rollers are used and has for its object
to provide simple and efficient meaus whereby one of the said rollers may be
easily and quickly adjusted in a parallel or level position with respect to the other
roller.

page_text: According to my invention I mount the top roller in suitable bearings formed in
the standards at each end of the machine, the lower roller being carried by sliding
blocks or bearings fitting in openings or guides formed in the said standards.
Underneath the lower roller is a shaft supported at each end by the standards and
running parallel with the said roller at a short distance therefrom.
This shaft is provided near each end with a cam or scroll and each of the
adjustable blocks or bearings of the lower roller is formed with a projection which
bears upon or engages with the said cams or scrolls in such a manner that as the
cam shaft is turned, by means of a hand wheel at one end, in one or the 'other
direction, the lower roller is raised nearer to, or lowered' further from the upper or
fixed roller.
The two cams or scrolls being similar to each other in shape and size always
maintain the lower roller in a parallel or level position with respect to the upper
roller and recesses are formed in the standards within which the cams or
-scrolls work.
In the accompanying sheet of drawings illustrating a machine according to my
invention Figure 1 is a side view thereof with one end partly in section and
Figure 2 is an end of the same with a portion of the standard broken away.
a a are the two end standards and 6 is the top roller mounted in the bearings a of
the said standards c is the lower roller carried by the blocks or bearings c capable
of sliding within the guides or open parts a 2 of the standards. d is the shaft
supported at each end by the standards beneath the roller c and parallel with the
same. ee are the cams or scrolls formed with or fixed to the shaft d near its
'outer ends.
Each of the blocks or bearings c¹ is provided with a curved projection.c 2 which
bears upon or engages with the outer curved surface of the cams or scrolls
and by means of which the roller c is supported and adjusted in a parallel position
'to the roller.b.
This adjustment is effected by turning the shaft d by means of the hand wheel-d
fixed on one end of the same and the cams or scrolls preferably work within
recesses a 3 formed in the standards a.
The photographs to be burnished are placed between the rollers b and c and the
latter are revolved by any suitable means.
The roller c is preferably made hollow for receiving a gas jet pipe for heating it
internally or it may be heated externally.
Having now particularly described and ascertained the nature of my said inven-
tion I declare that what I claim is ;-
:
1. In machines for calendering or burnishing photographic prints the employment
of two rollers the lower one of which is adjusted nearer to or further from the
upper one by means of cams or scrolls formed with or fixed upon a shaft carried
underneath and parallel to the lower roller substantially as described and for the
purposes specified.
2. In machines as above claimed the combination with the standards a of the top
roller 6 mounted in bearings a, the lower adjustable hollow roller c. carried by
bearings chaving projections c 2 and sliding between guides a 2 of the standards
and the shaft d provided with adjusting cams or scrolls e working in recesses a 3 of
the standards and operated by means of a hand-wheel-d substantially as described
and for the purposes specified.
3. The improved machine for calendering or burnishing photographic prints
substantially as described and shown in the drawings.
Dated this 20th day of October 1896.
J. B. FLEURET,
5 Hatton Garden, London, Agent for the Applicant,
J. B. FLEURET,
5 Hatton Garden, London, Agent for the Applicant.