US125029A - Improvement in call-bells - Google Patents
Improvement in call-bells Download PDFInfo
- Publication number
- US125029A US125029A US125029DA US125029A US 125029 A US125029 A US 125029A US 125029D A US125029D A US 125029DA US 125029 A US125029 A US 125029A
- Authority
- US
- United States
- Prior art keywords
- call
- rod
- improvement
- arms
- bells
- 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
- 210000001364 Upper Extremity Anatomy 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000006011 modification reaction Methods 0.000 description 4
- 210000003414 Extremities Anatomy 0.000 description 2
- 210000003141 Lower Extremity Anatomy 0.000 description 2
- 230000001154 acute Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002459 sustained Effects 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
- G10K1/28—Bells for towers or the like
- G10K1/30—Details or accessories
- G10K1/32—Sounding members; Clappers or other strikers
Definitions
- Figure 1 is an elevation of my improved call-bell, the gong being represented in vertical section to show the striking mechanism.
- Fig. Z- is a detached view of the pressure-rod and duplex hammers with amodilied form of arms.
- Fig. 3 is a modification of my device, showing the duplex arms pivoted to the pressure-rod.
- A is the base; B, the standard; and O,the gong.
- the standard is preferably made bifurcated within and below the gong to admit of hanging the hammer-arms centrally, and its top portion is hollow, to form a receptacle for the pressurerod d, which moves freely within it, and is pro vided with a button or knob, j, at its upper extremity, while its lower end terminates, by preference, in an enlargement, e, which serves to prevent its withdrawal from the standard, and presents a larger surface to act upon the hammer-arms ff.
- hammers h h are affixed to the lower extremities of the arms f f, and, when at rest, hang in nearly a vertical position, as represented by dotted lines in Fig. 1, their arms necessarily converging to receive the same axis, and their upper extremities i t forming an acute angle with relation to each other, and giving support to the pressure-rod.
- duplex hammers by striking the gong together, produce a fuller and rounder note than that made by a single blow, the effect of the force of two blows acting in opposite directions so modifying the vibrations that they unite and produce a harmonious sound of improved tone, while the same cause acts inechanically to preserve the equilibrium of the gongon its bearing by preventing disadjustment and unequal wear.
- Fig. 3 represents an equivalent arrangement, in which the heads of the two-hammerarms are pivoted to the pressure-rod by means of connecting-rods 7c 70. This modification of the construction produces no difi'erenee in the result or principle of operation.
- the hammer-arms may be fitted on their axis by slotting one and passing the other through it, or the two may have plane surfaces working side by side.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
-HENRY A; DIERKES. Improvement in Call Belfls.
Patented March 26, 1872.
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FFIGE HENRY A. DIERKES, OF NEW YORK, N. Y.
IMPROVEMENT IN CALL-BELLS.
Specification forming part of Letters Patent No. 125,029, dated March 26,1872.
SPECIFICATION.
To all whom, 'it m any concern:
Be it known that I, HENRY A. DIERKES, of the city, county, and State of New York, have invented an Improvement in Call-Bells, which I denominate the Duplex Striking-Bell, of which the following is a description My invention has for its object to produce a call-bell of simple construction, reliable in its operation, and of improved tone 5 and it consists in the employment of duplex arms journaled to the standard on one axis, in such relation to a vertical pressure-rod that, when passive, said rod is sustained by and between the two extremities or heads of the arms above their axis; and, when sufficient force is employed to depress the rod, such action causes the hammers to rise and simultaneouslystrike the gong, as hereinafter described.
Figure 1 is an elevation of my improved call-bell, the gong being represented in vertical section to show the striking mechanism. Fig. Z-is a detached view of the pressure-rod and duplex hammers with amodilied form of arms. Fig. 3 is a modification of my device, showing the duplex arms pivoted to the pressure-rod.
As represented in the drawin g, A is the base; B, the standard; and O,the gong. The standard is preferably made bifurcated within and below the gong to admit of hanging the hammer-arms centrally, and its top portion is hollow, to form a receptacle for the pressurerod d, which moves freely within it, and is pro vided with a button or knob, j, at its upper extremity, while its lower end terminates, by preference, in an enlargement, e, which serves to prevent its withdrawal from the standard, and presents a larger surface to act upon the hammer-arms ff. These are journaled side by side, crossing each other, on a pin or other axis, 9, which has its bearings in the standard B, directly below and in vertical line with the pressure-rod. The hammers h h are affixed to the lower extremities of the arms f f, and, when at rest, hang in nearly a vertical position, as represented by dotted lines in Fig. 1, their arms necessarily converging to receive the same axis, and their upper extremities i t forming an acute angle with relation to each other, and giving support to the pressure-rod.
Force suddenly imparted to the pressure-rod causes it to traverse down the incline of the heads or endsi 2', expanding the wedge-shaped opening between them, and swinging the 11ammers simultaneously outward in an arc till they strike the gong. As soon as pressure is with drawn from the knob j the presser-rod is raised by the return of the hammers to their former position. The inclination of the heads timay be increased by forming them beveled, as in Fig. 1, to a greater or less extent, as desired. The duplex hammers, by striking the gong together, produce a fuller and rounder note than that made by a single blow, the effect of the force of two blows acting in opposite directions so modifying the vibrations that they unite and produce a harmonious sound of improved tone, while the same cause acts inechanically to preserve the equilibrium of the gongon its bearing by preventing disadjustment and unequal wear.
Fig. 3 represents an equivalent arrangement, in which the heads of the two-hammerarms are pivoted to the pressure-rod by means of connecting-rods 7c 70. This modification of the construction produces no difi'erenee in the result or principle of operation.
The hammer-arms may be fitted on their axis by slotting one and passing the other through it, or the two may have plane surfaces working side by side.
I claim as my invention As an improved call-bell, the employment of the duplex hammer-rods ff, in combination with the pressure-rod (1, standard B, and gong 1, arranged and operating substantially as shown and described.
In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.
HENRY A. DIEJRKES.
Witnesses:
J. FRASER, GEO. W. MIATT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US125029A true US125029A (en) | 1872-03-26 |
Family
ID=2194458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US125029D Expired - Lifetime US125029A (en) | Improvement in call-bells |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US125029A (en) |
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0
- US US125029D patent/US125029A/en not_active Expired - Lifetime
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