Rope Grabs

Rope Grabs are industrial devices used to protect workers in high places. Their function is to ensure that the worker doesn't perform the big splat when falling from high places; however, they are often used with safety belts that can cause a slower and far less spectacular death by suffocation. This can't be blamed on the rope grab, its the fault of the uninformed user.

My interest in rope grabs is that they are similar to ascenders, and suggest alternate ideas for ascender design. I will discuss these in this context instead of the context of their intended use.

ID Device Description Acquired Weight Height Width Thickness Std. volume

660 Atlas Kwik-Stop Model 6275 Al, lever-activated sliding block, for 5/8-3/4 inch (16-19 mm) nylon rope. Bob Elron 1227 176 157 51 1409

765 Barrow/Hepburn Everest Camlock Al tube, plastic guides, ball locks, dual lever eBay, Leeds, UK, 2002 757 157 137 83 1785

804 DBI/SALA Lad-Saf L-3330 Cast steel body, lever-actuated cam block, open side, for 3/8-in cable Harry Rogers, 2004 690 135 133 32 575

803 DBI/SALA Lad-Saf LS-038 Steel, lever-actuated sliding cam /w pulley, 2 QR pin closure, for 3/8-in cable Harry Rogers, 2004 892 180 132 61 1449

670 DBI/SALA Lad-Saf LS-58 Steel, wedging roller, for 5/8 inch (16 mm) synthetic rope. John Murray, 1993 1127 190 109 51 1056

817 DBI/SALA LS-1441 Milled & stamped steel, rear gate, lever & wedge roller action Len Nicolai, 2005 720 165 104 47 803

632 Komet Altochut, Version A Steel, type 1 lever cam, for specified 5/8 inch (16 mm) polypropylene or nylon rope. KHS Sales, 1988 505 81 151 63 771

820 Komet Altochut, Version B Steel, type 1 lever cam, stamped eye, for specified 5/8 inch (16 mm) polypropylene or nylon rope. Len Zandee, 2005 515 81 148 62 746

728 Komet Stick-Run Steel, type 1 lever cam, for 10.5 mm kernmantle or 12 mm laid rope. Inner Mountain Outfitters, 1999 461 81 110 63 561

883 Miller Bronze 8 /w side arm, manila lanyard /w clip Cal Manky, 2007 715 250 156 49 1912

634 Miller 8174, Version A Steel, dual type 1 lever cams, catch & screw closure, small eye, for 5/8 inch (16 mm) rope. John E. Weinel, Inc., 1988 803 122 72 89 782

889 Miller 8174, Version B Steel, dual type 1 lever cams, catch & screw closure, large eye, for 5/8 inch (16 mm) or 3.4 inch (19 mm) rope. Lindsay Rissinger, 2008 898 165 72 83 975

890 Miller 8174, Version C Steel, dual type 1 lever cams, screw closure, large eye, for 5/8 inch (16 mm) or 3.4 inch (19 mm) rope. Lindsay Rissinger, 2008 725 167 67 81 900

710 Mio Mechanical Steel, type 1 lever activated compression shoe, for 1/2 in synthetic rope. On Rope 1, 1997 641 109 136 65 964

880 Petzl ASAP Al shell, toothed inertia wheel on spring-loaded lever, plastic guard. Inner Mountain Outfitters, 2007 339 136 89 38 461

747 Petzl Macrograb B52 Milled Al frame & cam, QR Pin axle, stranded spring-wire On Rope 1, 2000 336 114 92 51 536

746 Petzl Micrograb B53 Milled Al frame & cam, bolt axle, stranded spring-wire On Rope 1, 2000 173 74 58 51 216

781 PMI Arrestor Forged painted frame, hardcoated Al cam, SS bolt axle On Rope 1, 2003 209 98 61 49 291

741 PMI Grip-Tech Jr. Milled Al frame & cam, bolt axle, stranded spring-wire Inner Mountain Outfitters, 2000 179 85 62 59 311

782 PMI Progressor, Version A Forged painted frame, hardcoated Al cam, SS axle, spring-loaded axle latch On Rope 1, 2003 208 98 72 49 343

783 PMI Progressor, Version B Forged painted frame, hardcoated Al cam, SS axlebolt. On Rope 1, 2003 209 98 72 46 323

729 Protecta International AC202/01 Cobra Steel, type 1 lever cam, for 12-16 mm rope GyC Seguridad S.L., 2000 805 106 120 62 785

730 Protecta International AC350 Cabloc Steel, dual type 1 lever cams, for 8 mm wire cable GyC Seguridad S.L., 2000 488 100 97 20 195

784 Protecta International AC400 Viper Steel, spring-loaded pivot arm, fixed anvil Inner Mountain Outfitters, 2003 439 93 110 27 280

870 RidgeGear Stainless steel, open side, spring-loaded cam & safety gate Lee Pyell, 2007 327 94 86 23 186

692 Rose Mfg. Safe-Hi Steel, compression device, for 3/4 in nylon or manila rope. Theresa Williams/Maury Benamy, 1995 963 300 150 58 2610

821 Safe-Waze Steel, type 1 lever cam, stamped eye, for specified 5/8 inch (16 mm) polypropylene or nylon rope. Len Zandee, 2005 601 103 158 70 1139

833 Sanko Ind. Co. Ltd. Titan Steel, type 1 lever cam, swing-open cam, for 16-mm rope. Paul Brian Scurr, 2006 592 104 108 51 568

736 Single Rope Technique A5 811 L Al, eccentric cam, cam-mounted safety Single Rope Technique, 2000 234 83 76 26 165

834 Teufelberger GRIP Rescue Steel, swinging front plate,, cast pot metal cam & anvil, removable descent handle Dirk-Jan Swier, 2005 576 96 129 39 477

874 Tractel Stopfor D Steel, type 1 lever cam, rubber roller, for 5/8 in (16-mm) rope Richard Wolle, 2007 615 105 93 54 527

766 Tractel Stopfor S Steel, type 1 lever cam, rubber roller, for 5/8 in (16-mm) rope Jame Bullard, 2002 475 79 96 65 491

742 Troll Rocker Al side plates, spring-loaded pivot arm, fixed anvil Troll, 2000 162 113 65 30 216

881 Unknown Steel, type 1 lever cam, steel roller, for 16 mm. rope Mike Moser, 2007 801 116 92 64 685

661 UNR-Rohn Rohn-Loc Steel, type 1 lever cam. John E. Weinel, Inc., 1990 989 102 167 34 579

778 Yates Rocker Al side plates, spring-loaded pivot arm, fixed anvil, lever lock Mountain Gear, 2003 163 115 65 29 219

ID	Device	Description	Acquired	Weight	Height	Width	Thickness	Std. volume
660	Atlas Kwik-Stop Model 6275	Al, lever-activated sliding block, for 5/8-3/4 inch (16-19 mm) nylon rope.	Bob Elron	1227	176	157	51	1409
765	Barrow/Hepburn Everest Camlock	Al tube, plastic guides, ball locks, dual lever	eBay, Leeds, UK, 2002	757	157	137	83	1785
804	DBI/SALA Lad-Saf L-3330	Cast steel body, lever-actuated cam block, open side, for 3/8-in cable	Harry Rogers, 2004	690	135	133	32	575
803	DBI/SALA Lad-Saf LS-038	Steel, lever-actuated sliding cam /w pulley, 2 QR pin closure, for 3/8-in cable	Harry Rogers, 2004	892	180	132	61	1449
670	DBI/SALA Lad-Saf LS-58	Steel, wedging roller, for 5/8 inch (16 mm) synthetic rope.	John Murray, 1993	1127	190	109	51	1056
817	DBI/SALA LS-1441	Milled & stamped steel, rear gate, lever & wedge roller action	Len Nicolai, 2005	720	165	104	47	803
632	Komet Altochut, Version A	Steel, type 1 lever cam, for specified 5/8 inch (16 mm) polypropylene or nylon rope.	KHS Sales, 1988	505	81	151	63	771
820	Komet Altochut, Version B	Steel, type 1 lever cam, stamped eye, for specified 5/8 inch (16 mm) polypropylene or nylon rope.	Len Zandee, 2005	515	81	148	62	746
728	Komet Stick-Run	Steel, type 1 lever cam, for 10.5 mm kernmantle or 12 mm laid rope.	Inner Mountain Outfitters, 1999	461	81	110	63	561
883	Miller	Bronze 8 /w side arm, manila lanyard /w clip	Cal Manky, 2007	715	250	156	49	1912
634	Miller 8174, Version A	Steel, dual type 1 lever cams, catch & screw closure, small eye, for 5/8 inch (16 mm) rope.	John E. Weinel, Inc., 1988	803	122	72	89	782
889	Miller 8174, Version B	Steel, dual type 1 lever cams, catch & screw closure, large eye, for 5/8 inch (16 mm) or 3.4 inch (19 mm) rope.	Lindsay Rissinger, 2008	898	165	72	83	975
890	Miller 8174, Version C	Steel, dual type 1 lever cams, screw closure, large eye, for 5/8 inch (16 mm) or 3.4 inch (19 mm) rope.	Lindsay Rissinger, 2008	725	167	67	81	900
710	Mio Mechanical	Steel, type 1 lever activated compression shoe, for 1/2 in synthetic rope.	On Rope 1, 1997	641	109	136	65	964
880	Petzl ASAP	Al shell, toothed inertia wheel on spring-loaded lever, plastic guard.	Inner Mountain Outfitters, 2007	339	136	89	38	461
747	Petzl Macrograb B52	Milled Al frame & cam, QR Pin axle, stranded spring-wire	On Rope 1, 2000	336	114	92	51	536
746	Petzl Micrograb B53	Milled Al frame & cam, bolt axle, stranded spring-wire	On Rope 1, 2000	173	74	58	51	216
781	PMI Arrestor	Forged painted frame, hardcoated Al cam, SS bolt axle	On Rope 1, 2003	209	98	61	49	291
741	PMI Grip-Tech Jr.	Milled Al frame & cam, bolt axle, stranded spring-wire	Inner Mountain Outfitters, 2000	179	85	62	59	311
782	PMI Progressor, Version A	Forged painted frame, hardcoated Al cam, SS axle, spring-loaded axle latch	On Rope 1, 2003	208	98	72	49	343
783	PMI Progressor, Version B	Forged painted frame, hardcoated Al cam, SS axlebolt.	On Rope 1, 2003	209	98	72	46	323
729	Protecta International AC202/01 Cobra	Steel, type 1 lever cam, for 12-16 mm rope	GyC Seguridad S.L., 2000	805	106	120	62	785
730	Protecta International AC350 Cabloc	Steel, dual type 1 lever cams, for 8 mm wire cable	GyC Seguridad S.L., 2000	488	100	97	20	195
784	Protecta International AC400 Viper	Steel, spring-loaded pivot arm, fixed anvil	Inner Mountain Outfitters, 2003	439	93	110	27	280
870	RidgeGear	Stainless steel, open side, spring-loaded cam & safety gate	Lee Pyell, 2007	327	94	86	23	186
692	Rose Mfg. Safe-Hi	Steel, compression device, for 3/4 in nylon or manila rope.	Theresa Williams/Maury Benamy, 1995	963	300	150	58	2610
821	Safe-Waze	Steel, type 1 lever cam, stamped eye, for specified 5/8 inch (16 mm) polypropylene or nylon rope.	Len Zandee, 2005	601	103	158	70	1139
833	Sanko Ind. Co. Ltd. Titan	Steel, type 1 lever cam, swing-open cam, for 16-mm rope.	Paul Brian Scurr, 2006	592	104	108	51	568
736	Single Rope Technique A5 811 L	Al, eccentric cam, cam-mounted safety	Single Rope Technique, 2000	234	83	76	26	165
834	Teufelberger GRIP Rescue	Steel, swinging front plate,, cast pot metal cam & anvil, removable descent handle	Dirk-Jan Swier, 2005	576	96	129	39	477
874	Tractel Stopfor D	Steel, type 1 lever cam, rubber roller, for 5/8 in (16-mm) rope	Richard Wolle, 2007	615	105	93	54	527
766	Tractel Stopfor S	Steel, type 1 lever cam, rubber roller, for 5/8 in (16-mm) rope	Jame Bullard, 2002	475	79	96	65	491
742	Troll Rocker	Al side plates, spring-loaded pivot arm, fixed anvil	Troll, 2000	162	113	65	30	216
881	Unknown	Steel, type 1 lever cam, steel roller, for 16 mm. rope	Mike Moser, 2007	801	116	92	64	685
661	UNR-Rohn Rohn-Loc	Steel, type 1 lever cam.	John E. Weinel, Inc., 1990	989	102	167	34	579
778	Yates Rocker	Al side plates, spring-loaded pivot arm, fixed anvil, lever lock	Mountain Gear, 2003	163	115	65	29	219