Anal Speculum. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
QUINCY ADAMS SIIUFORD, OF TYLER, TEXAS.
ANAL SPECULUM.
SPECIFICATION forming part of Letters Patent No. 424,140, dated larch 25, 1890.
Application filed Tanuary 23, 1890, Serial No. 337,869, (No model,)
To all whoio it nncy concern: thin metal, to their proper curve, serves also
Be it known that I, QUINCY ADAMS SHU- as a guard or shield to prevent the hair from
FORD, a citizen of the United States, residing interfering with the operator.
at Tyler, in the county of Smith and State of 6 indicates a handle U-shaped in form, the
5 Texas, have invented certain new and useful legs 7 of which are made integral with or se- 55
Improvements in Anal Speculums; and I do cured in any desired manner to the flanges.
hereby declare the following to be a full, clear, This handle, which is constructed of material
and exact description of the invention, such as having considerable spring, serves to hold the
will enable others skilled in the art to which it shells, as shown in Fig. 1.
co appertains to make and use the same. In order that my speculum may be readily 60
My invention has relation to anal specu- used as a bi-valve or dilator, I employ a thumb-
lumns; and it consists in the construction and screw 8, which passes through a threaded
novel arrangement of parts, as hereinafter opening in a lug 9 on one leg of the handle
more fully described, illustrated in the accom- and has its opposite end reduced in diameter,
15 paying drawings, and pointed out in the ap- and passes through an opening 10 in a lug 11 65
pended claims. on the opposite leg of the handle.
The objects of my invention are, first, to so As my improved speculum is made in two
construct the several parts that there will be sections, and as there would be liability of the
no rough or raised edges to interfere with its edges of the shells lapping one another and
20 insertion in the anal passage; secondly, to so injuring or pinching the walls of the anal 70
construct my improved speculum that it may passage during its insertion, I form a lock on
be readilyusedas abi-valve ordilator; thirdly, the meeting edges of the shells, as follows: At
to form a locking-joint on the meeting edges the junction of the flange 4 with the shell 1,
of the shells forming the speculum, whereby at the top and bottom thereof, dowels 12 and
25 the sections are prevented from overlapping 13 are placed, designed to enter suitable reg- 75
each other to avoid pinching or injury to the istering openings 14 in the flange 5.
walls of the anal passage while the instru- To allow the speculum to be painlessly in-
ment is being inserted; fourthly,to providea serted in the anal passage, the apices of the
plug for my improved speculum, whereby the shells 1 and 2 are given a slight curve upward,
30 contour of the outer surface of the speculum as shown in Figs. 2 and 3. 80
is maintained. In order that the fenestra may be closed
In the drawings, Figure 1 is a top view of and a uniform exterior surface be presented
my improved speculum; Fig. 2, a top view to my speculum, I employ a tapering plug 15
showing the instrument as a bi-valve or dila- of the contour of the interior of the speculum,
35 tor; Fig. 3, a side view of my improved specu- the forward end of which is chamfered off to 85
lum; Fig. 4, a detail view of the plug; Fig. 5, correspond with the elliptical opening at the
a transverse section on the line x x of Fig. 2; end of the fenestra. The plug is provided
Fig. 6, a transverse section of a slight modifi- with a suitable handle 16, by means of which
cation of my improved speculum. it may be readily withdrawn from the specu-
40 Referring to the accompanying drawings, lum when the latter has been inserted in the 90
in which like numerals indicate correspond- analpassage. The meeting edges of the shells
ing parts in all the figures, 1 and 2 designate are slightly rounded, as well as the edges of
tapering semi-cylindrical shells cut away on the fenestra and elliptical opening, whereby
their upper edges for about two-thirds of their all danger of cutting the walls of the anal
45 length to form an elongated fenestra 3, ter- passage is overcome. 95
minating at its outer end in an elliptical form In Fig. 6 I have shown a transverse section
somewhat wider than the fenestra. At the of a modified form of constructing the lock,
bases of the shells are formed flanges 4 and 5, which is as follows: Thp edges of the shells
which, while serving as astrengthening-brace from the fenestra to the flanges are made a
50 to hold the shells, which are constructed of little thicker, and on one shell is formed a ioo
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Shuford, Quincy Adams. Anal Speculum., patent, March 25, 1890; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth172327/m1/2/?q=%22%22~1: accessed June 26, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.