US356759A - Paul gmehlikt - Google Patents
Paul gmehlikt Download PDFInfo
- Publication number
- US356759A US356759A US356759DA US356759A US 356759 A US356759 A US 356759A US 356759D A US356759D A US 356759DA US 356759 A US356759 A US 356759A
- Authority
- US
- United States
- Prior art keywords
- key
- frame
- screw
- paul
- puncheons
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000001699 lower leg Anatomy 0.000 description 4
- 239000000789 fastener Substances 0.000 description 2
- 230000001105 regulatory Effects 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
- G10C3/12—Keyboards; Keys
Definitions
- PAUL GMEHLIN OF NEYV YORK, N. Y.
- FIG. 2 is a vertical cross-section on an enlarged scale, the line 0 c, Fig. 1, indicating the plane of section.
- Fig. 3 is a section on the line is k, Fig. 2, said figure being on a still larger scale than Fig. 2.
- Fig. 4 is an end view of the screw which regulates the position of the key-frame.
- the object of this invention is to so construct the key-frame and its connections that the touch of the keys can be regulated at will, and so, also, that any shrinkage of thekey-frame or key-bottom can be promptly and conveniently counteracted.
- the invention consists, principally, in combining a separate key-frame with a supporting key-bottom and with a special screw, or rather set of screws, for drawing the key-frame into any desired position, as hereinafter described.
- the letter A represents the key-bottom of a piano-forte, which is usually, or for the purposes of this invention may be, a solid bottom of wood.
- Bis the key-frame which is composed of the back rail, or, balance-rail, b, and front rail, (1, and of the cross-pieces e c.
- This key-frame B is at its back portion, by strong screws or fasteners f, secured to the back portion of the keybottom. Screws ⁇ 1 may also serve to secure the key-frame, the balance-rail b, and the keybottom A together.
- 0 is one of the keys'of a piano, and hthepin on the balance-rail, which serves as a pivotal connection for said key.
- the front rail, (1, of the frame B carries the front key-pin, i, and a series of puncheons, j.
- an open space will be observed at Z between the lower face of the front portion of the key-frame B and the upper face of the key-bottom A.
- This open space is left there for the purpose of enabling a set of screws, D D, to regulate the elevation of the front part of the key-frame B, and thereby the height of the puncheons j si in ultaneously-th at is to say, the high er these puncheons stroke of each key 0.
- the screws D are placed, by preference, in the front portions of the crosspieces 6 of the key-frame, so that where the key-frame has four such cross-pieces it will havefour such screws, D.
- Each of these screws D has a threaded shank, m, which engages with the wood-work of the key-bottom A, as in Fig. 3.
- the lower end ofthe screw Dis squared, as at a, or otherwise constructed to be readily gripped by a wrench or a screwdriver.
- the screw D is turned from below to regulate the extent to which its upper portion projects above the key-botton1 A.
- the threaded portion at the screw D has a smooth shank, 0, which traverses the main part of thekey-frameB.
- a loose washer, p rests on the threaded portion m and serves as a support for the lower side of the key-frame 1-3.
- a recess, q is out into the upper face of the key-bottom A, for receiving the washer p whenever the key-frame'is drawn down as far as possible.
- the uppermost end of the screw D is squared, as at r, and threaded at its corners.
- the player can also by the use of this in vention give to the keys of his instrument a greater or less degree of motion by adjusting the puncheons j to the desired height.
- I claim-- 1 In a piano, the combination of the keybottom A with the key-frame B, secured at one end to said key-bottom, and regulatingscrews D, bearing against the other end of said key-frame, all arranged for leaving a space, Z, between the front portion of the key-bottom and key-frame, as specified.
- the screw D having wrench-head n at lower part, threaded portion on, smooth portion 0, and squared and threaded upper portion, 1', in combination with the washers p s and nut t, for use on the key-bottom A and keyframe B, as herein shown and described.
Description
(No Model.) 1 GMEHLIN.
KEY FRAME FOR PIANO FORTES. No. 356,759. Patented Feb. 1, 1887.
E52! a I i if 3 6 U W I I 2 4 r1 n H? v IL UNITED STATES PATENT OFFICE.
PAUL GMEHLIN, OF NEYV YORK, N. Y.
KEY-FRAME FOR PlANO-FORTES.
SPECIFICATION forming part of Letters Patent No. 356,759, dated February 1, 1887.
Application filed September 22. 1886. Serial No. 214,216. (No model.)
.To aZZ whom, it may concern.-
Be it known that 1, PAUL GMEHLIN, a resident of New York city, in the county and State of New York, have invented an Improvement in Key-Frames for Piano-Fortes, of which the following is a full, clear, and exact description, reference being made to the accompanying drawings, in which-- Figure l is a top view of a key-frame of my invention. Fig. 2 is a vertical cross-section on an enlarged scale, the line 0 c, Fig. 1, indicating the plane of section. Fig. 3 is a section on the line is k, Fig. 2, said figure being on a still larger scale than Fig. 2. Fig. 4is an end view of the screw which regulates the position of the key-frame.
The object of this invention is to so construct the key-frame and its connections that the touch of the keys can be regulated at will, and so, also, that any shrinkage of thekey-frame or key-bottom can be promptly and conveniently counteracted.
The invention consists, principally, in combining a separate key-frame with a supporting key-bottom and with a special screw, or rather set of screws, for drawing the key-frame into any desired position, as hereinafter described.
In the drawings, the letter A represents the key-bottom of a piano-forte, which is usually, or for the purposes of this invention may be, a solid bottom of wood.
Bis the key-frame, which is composed of the back rail, or, balance-rail, b, and front rail, (1, and of the cross-pieces e c. This key-frame B is at its back portion, by strong screws or fasteners f, secured to the back portion of the keybottom. Screws {1 may also serve to secure the key-frame, the balance-rail b, and the keybottom A together.
0 is one of the keys'of a piano, and hthepin on the balance-rail, which serves as a pivotal connection for said key. The front rail, (1, of the frame B carries the front key-pin, i, and a series of puncheons, j.
In the drawings, particularly in Fig. 2, an open space will be observed at Z between the lower face of the front portion of the key-frame B and the upper face of the key-bottom A. This open space is left there for the purpose of enabling a set of screws, D D, to regulate the elevation of the front part of the key-frame B, and thereby the height of the puncheons j si in ultaneously-th at is to say, the high er these puncheons stroke of each key 0. The screws D are placed, by preference, in the front portions of the crosspieces 6 of the key-frame, so that where the key-frame has four such cross-pieces it will havefour such screws, D. Each of these screws D has a threaded shank, m, which engages with the wood-work of the key-bottom A, as in Fig. 3. The lower end ofthe screw Dis squared, as at a, or otherwise constructed to be readily gripped by a wrench or a screwdriver. Thus the screw D is turned from below to regulate the extent to which its upper portion projects above the key-botton1 A.
Above the threaded portion at the screw D has a smooth shank, 0, which traverses the main part of thekey-frameB. A loose washer, p, rests on the threaded portion m and serves as a support for the lower side of the key-frame 1-3. A recess, q, is out into the upper face of the key-bottom A, for receiving the washer p whenever the key-frame'is drawn down as far as possible. The uppermost end of the screw D is squared, as at r, and threaded at its corners. Upon this squared portion 0 is fitted a washer, s, having a square hole, so that it cannot turn on the screw, and over this washer is placed a nut, t, which engages the threaded corners of the squared portion 1' of the screw. Inasmuch as the washer 8 cannot revolve on the screw, it is not liable to jar the nut t loose. For the reception of the washer and nut s t a recess, a, is formed in the upper face of the key-frame B.
In case the key-bottom by warping should spring the key-frame out of shape, and thereby vary the space lor the height of the puncheons j, it is only necessary to turn the screws D D and set the puncheons back to the desired height.
The player can also by the use of this in vention give to the keys of his instrument a greater or less degree of motion by adjusting the puncheons j to the desired height.
I am aware that adjustable puncheons are old; but they are impracticable, as each has to be adjusted by itself, which renders it imposare placed the shorter will he the sible to secure a uniform touoh'for a set of keys, and also that a screw has been used for adjusting the balance-rail.
I claim-- 1. In a piano, the combination of the keybottom A with the key-frame B, secured at one end to said key-bottom, and regulatingscrews D, bearing against the other end of said key-frame, all arranged for leaving a space, Z, between the front portion of the key-bottom and key-frame, as specified.
2. The combination ofthekey-bottom A, and key-frame B, carrying a series of puncheons,
j,with the regulating-screws D, bearing against the front portion of the key-frame for simultaneously adj usting said puncheons, as specified. 3. The screw D, having wrench-head n at lower part, threaded portion on, smooth portion 0, and squared and threaded upper portion, 1', in combination with the washers p s and nut t, for use on the key-bottom A and keyframe B, as herein shown and described.
PAUL GMEHLIN. Witnesses:
GUSTAV SOHNEPPE, HARRY M. TURK.
Publications (1)
Publication Number | Publication Date |
---|---|
US356759A true US356759A (en) | 1887-02-01 |
Family
ID=2425804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US356759D Expired - Lifetime US356759A (en) | Paul gmehlikt |
Country Status (1)
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US (1) | US356759A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3177752A (en) * | 1962-02-23 | 1965-04-13 | Wurlitzer Co | Keyframe arrangement |
BG65467B1 (en) * | 2001-03-22 | 2008-09-30 | Heraeus Kulzer Gmbh & Co.Kg | Antibiotic preparation of delayed active ingredient release |
US20100186393A1 (en) * | 2007-09-04 | 2010-07-29 | Hino Motors, Ltd. | Injector mounting structure |
-
0
- US US356759D patent/US356759A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3177752A (en) * | 1962-02-23 | 1965-04-13 | Wurlitzer Co | Keyframe arrangement |
BG65467B1 (en) * | 2001-03-22 | 2008-09-30 | Heraeus Kulzer Gmbh & Co.Kg | Antibiotic preparation of delayed active ingredient release |
US20100186393A1 (en) * | 2007-09-04 | 2010-07-29 | Hino Motors, Ltd. | Injector mounting structure |
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