Improvements in Speculums.
Year: 1892

page_text: Date of Application, 21st July, 1892
...Complete Specification Left, 21st Apr., 1893-Accepted, 27th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Speculums.
I, JAMES ARNOLD; of the firm of Arnold and Sons, of West Smithfield, in the
City of London, Surgical Instrument Makers, do hereby declare the nature of-this
invention to be as follows:-
This invention is designed with the object of producing an instrument which
can be expanded and contracted with greater facility than heretofore, whereby the
same may be inserted in position when contracted-and-subsequently expanded.
The instrument is composed of a series of rings graduating in diameter, for
example, four in number, jointed on each side to a bar or bar frame, the rear end
of which forms a bearing for a screw threaded rod connected to a guide rod, to
which each of the rings is hinged or jointed. According to the direction in which
the screw is turned, by its adjusting handle, the series of rings are raised at right
angles to the bar frame or brought down on the frame or to any intermediate angle
therewith.
T11000
BREWER & SON,
33, Chancery Lane, London, Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Speculums.
I, JAMES ARNOLD, of the firm of Arnold and Sous, of West Smithfield, in the
City of London, Surgical Instrument Makers, 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 is designed with the object of producing an instrument which
can be expanded and contracted with greater facility than heretofore, whereby the
same may be inserted in position when contracted and subsequently expanded.
The instrument is composed of a series of rings, for example, four in number,
jointed on each side to a bar or bar-frame, the rear end of which forms a bearing
for a screw threaded rod connected to a guide rod to which each of the rings is
hinged or jointed.
My invention will be readily understood by describing same with reference to
the accompanying drawings whereon
Fig. 1 shews an elevation of a speculum constructed according to my said
invention, shewing the device in an expanded position, Fig. 2 being a similar view,
shewing the instrument closed, one of the bars being removed to better shew the
construction and position of the parts;
Fig. 3 is a plan view of Fig. 2.
Similar letters of reference indicate like parts in the several figures of the
drawing.
A A A A are the rings as shewn at Fig. 1; B is the bar-frame, the limbs of
which extend on each side of the rings A, the latter being pivoted to the bar-
frame B by screws or studs C. D is the bearing hinged to the rear end of the
bar-frame B, the bearing D being internally screw-threaded to receive the screw-
threaded rod E. F is the guide rod to which the screw E is connected, the said
guide rod being hinged or jointed at F¹ to each of the rings A, and G is a con-
necting bar, jointed to the extreme rings opposite to the bar F.
According to the direction in which the screw E is turned by its adjusting

page_text: handle E¹, the series of rings A are raised at or about right angles to the bar-
frame B, Fig. 1, or are brought down as at Figs. 2 and 3, onto the frame, or to
any intermediate angle therewith..
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:
The speculum, composed of rings pivoted within a bar-frame B, a threaded
bearing D on the bar-frame B, receiving an actuating screw E, a guide rod F
connected with the rings A, and with the screw E, for operating the instrument,
and a bar G connecting the rings, all constructed arranged and acting as and for
the purposes herein described with reference to the accompanying drawing.
Dated this 21st day'
Amil 1902
BREWER & SON,
London and Leeds, Agents for Applicant..